bush

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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

Make Model Problem Solution Added Date

Found: 627

Alba/Bush CTV100 Uncontollable vol that wont reduce

L101 o/c plamensl 14-09-2004

Bush 11AK12 Field collapse R818 22K in the 33V supply (yes the 33V supply). After changing this you will probably have a blank raster so change C707 100MFD in the field flyback circuit.

plamensl 14-09-2004

Bush 11AK12-9 Width & E/W inop R661 100k plamensl 14-09-2004

Bush 11AK19 No start up No line drive - check coil in emitter of LOPTr for burn up (not shown on cct)

plamensl 14-09-2004

Bush 11AK19 Service Mode access Enter install mode then press "4, 7, 2, 5"

plamensl 14-09-2004

Bush 11AK19-B1 Field collapse After trying new chip TDA8351 which made no diff, fault traced to D606 BA157 which checked ok out of cct

plamensl 14-09-2004

Bush 1400 DEAD ( P.SUPPLY IN BURST MODE )

ZD 601 LEAKY plamensl 14-09-2004

Bush 1402 Int shuts down All volts present, no line drive - 500hz resonator pin 19 IC301dry joint

plamensl 14-09-2004

Bush 1407 Chans can't be stored The -30v to memory chip low at -12v. C602 1nF small, green cap decoupling zener leaky

plamensl 14-09-2004

Bush 1407 Dead R901 4R7 5w o/c, C903/4 caps across bridge rect s/c 4n7 500v

plamensl 14-09-2004

Bush 1407 Dead R913 oc plamensl 14-09-2004

Bush 1407 sound dist - sounds like spkr but isn't

add 0µ1 cap from pin 5 of IC201 KA2201 (TBA820M) to chassis

plamensl 14-09-2004

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Bush 1407 (Onwa) bad audio distortion which at first sounded like a faulty spkr.

Despite replacing this, the audio o/p ic IC201 KA2201 (TBA820M) and variouscaps around it the fault remained. adding a 0.1mfd cap from the o/p of the ic (pin 5) to chassis, this completely cured the fault

plamensl 14-09-2004

Bush 1408 Excess height R240 10k or18k hi res plamensl 14-09-2004

Bush 1408 Lack of height R240 10k or 18k hi res plamensl 14-09-2004

Bush 1418 Dead - no st/by led R913 330k plamensl 14-09-2004

Bush 1427T Blue screen with fb lines 18k on crt base plamensl 14-09-2004

Bush 1427T bright screen with fb lines check crt cathodes - if low at 100v check R435 0R68 safety res

plamensl 14-09-2004

Bush 1430 R/C not working If TFMS 1340 or 1360 IR sensor reciever used then its probably faulty

plamensl 14-09-2004

Bush 1433 BLANK SCREEN WITH THREE LINES AT TOP L/H SIDE THEN UNIT SHUTS DOWN

INPUT ANTI-THEFT PASSWORD WITH REMOTE OR CONTACT TECHNICAL FOR PASSWORD

plamensl 14-09-2004

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Repair tips



Found: 627

Bush 1433 Dead R804 820k start up resistor o/c plamensl 14-09-2004

Bush 1433 Dead R809 0R47 o/c, R805 330k ?w o/c, Q801 BUZ77B s/c

plamensl 14-09-2004

Bush 1433 DEAD REPLACE R802 75K2W plamensl 14-09-2004

BUSH 1433 DEAD REPLACE R809 0.47OHMS plamensl 14-09-2004

Bush 1433 Dead - chopper FET BUZ77B s/c, R809 0R47 o/c

Chopper tfmr HR9104 plamensl 14-09-2004

Bush 1433 dead - primary ht only

R804 820k o/c plamensl 14-09-2004

Bush 1433 off chopper tfmr faulty caused demise of R809 4R7? Q801 FET BUX77B & TDA4605

plamensl 14-09-2004

Bush 1433 off with BUZ77B s/c & 0R47 o/c

replace BUZ77B, TDA4605-2, 0R47, check R805 330K R803 820k and caps also for s/c pri winding of chopper tfmr

plamensl 14-09-2004

Bush 1433 Small pic HT low at 89v

HT res cap 47µ 160v hot & bothered

plamensl 14-09-2004

Bush 1433 St/by only Check R804 330k & R805 820k in psu, FET & TDA4506. Also, if front buttons broken, punter may have damaged connections to print around X501

plamensl 14-09-2004

Bush 1433 When replacing TDA4605

If after replacement, st/by LED flashes & difficult to turn on - also 112v HT low at 107v try a different TDA4605- it worked for me!

plamensl 14-09-2004

Bush 1433 11AK20 Blank screen with 3 lines top lh of screen then shuts down (Anti-theft password set)

Enter correct password! plamensl 14-09-2004

Bush 1433 11AK20 Bright B pic with FB lines

Q907 BF423 leaky or equiv in other col

plamensl 14-09-2004
































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Bush 1433 11AK20 Dead R802 75k 2w o/c or R809 0R47 o/c

plamensl 14-09-2004

Bush 1433 11AK20 Dead - internal fuse intact

power surge blown bridge rects - replace also safety res 2R2 5w

plamensl 14-09-2004

Bush 1433 11AK20 Int dead or reverting to st/by

Dry joints IC802 reg & IC401 jungle chip (under IF shielding plate)

plamensl 14-09-2004

Bush 1433 11AK20 LH side pic purple, RH side green

IC402 STV2180A faulty plamensl 14-09-2004

Bush 1433 11AK20 No pic - sound ok

Loptx arcing with C615 - LOPTx faulty

plamensl 14-09-2004

Bush 1433 11AK20 No pic/sound - HT ok

D604 BA157 LOPTx sec s/c plamensl 14-09-2004

Bush 1433 11AK20 St/by only No clock/data between IC502 EEPROM & Micro replace EEPROM pt no ALBA3621624020

plamensl 14-09-2004

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Found: 627

Bush 1433 11AK20 Watery/rolling pic - may be int

C407 47nF 50v vid coupling cap to IC401 pin 13 leaky

plamensl 14-09-2004

Bush 1433 11AK20D2 Dead 2R2 5w & 0R33 resistors off chopper trfmr blows at sw on - C814 220pF 1kv in psu pri s/c

plamensl 14-09-2004

Bush 1433 11AK20M-3 Trips at sw on D604 200v rect s/c - fitted RGP15 in lieu

plamensl 14-09-2004

Bush 1433 11AK20S LED stays green (pic ok)

Q803 BC547 st/by sw tr leaky

plamensl 14-09-2004

Bush 1433 11AK20S Poor video HF response

Check R931, R932 & R933 150k on crt base

plamensl 14-09-2004

Bush 1433/1434/1435 Dead Q801 chopper s/c, R809 surge lim o/c, also replace R804, 805 & IC801

plamensl 14-09-2004

Bush 1433/34/35 DEAD Q801 S/C R809 O/C. REPLACE BOTH THESE AND R804/805 AND IC801

plamensl 14-09-2004

Bush 1433S Dead R804 820k o/c plamensl 14-09-2004

Bush 1433S Dead - R80 12R2 5w o/c

s/c windings chopper tx Pt no tx - BUSH30002070, res ALBA30001260

plamensl 14-09-2004

Bush 1433S Int reverts to st/by Dry joints chopper tx pri plamensl 14-09-2004

Bush 1434 Dead IC801 TDA4605-3 (must have suffix), R805 330k.Q801 BUZ77B and R809 .47ohm

plamensl 14-09-2004

Bush 1434 Dead - BU808DF1 faulty but runs hot on replacement

C602 in Trs base cct faulty

plamensl 14-09-2004

Bush 1434 No start up Q801 BUZ90; 1w 330k resistor risen in value

plamensl 14-09-2004






















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Bush 1434 11AK20M-3 Int tuning - no sigs resolder SMD`s around R584 / R521, located on underside of PCB near IC501

plamensl 14-09-2004

Bush 1434 11AK20M-3 Shuts down with ticking noise

D604 BA157 s/c plamensl 14-09-2004

Bush 1435GTV Dead - fuse intact Q801 s/c - replace with BUZ90AF, R809 0R47 & IC801

plamensl 14-09-2004

BUSH 1435GTV DEAD FUSE OK REPLACE Q801, R809 AND IC801 TRANBUZ90AF. 0.47 OHM AND IC**TDA4605

plamensl 14-09-2004

Bush 1439 Field collapse No drive pins 1 & 3 of fop chip - ceramic cap C623 1nF leaky

plamensl 14-09-2004

Bush 1452 Onwa Blank white raster with flyback lines.

L501 o/c. plamensl 14-09-2004

Bush 1452 Onwa Blowing 2SD1554 - HT line varies.

C911 ( 47u f 25v ) leaky. plamensl 14-09-2004

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Found: 627

Bush 1452 Onwa Dead. C909 ( 47u f 50v ) s/c. plamensl 14-09-2004

Bush 1452 Onwa Going into standby. Q404 ( 2SD1554 ) s/c. plamensl 14-09-2004

Bush 1452 Onwa Height decreases as set warms up.

C911 ( 47u f 50v ) plamensl 14-09-2004

Bush 1452 Onwa No frame or line sync. R619 ( 27ohm ) o/c. plamensl 14-09-2004

Bush 1452 Onwa No sound or raster. Dry on R913. plamensl 14-09-2004

Bush 1452 Onwa Snowy raster - no tuning.

R646 ( 10k ) o/c. plamensl 14-09-2004

Bush 1452 Onwa Squeal at switch on - then goes to standby.

Q404 ( 2SD1554 ) s/c. plamensl 14-09-2004

Bush 1452 Onwa Thin black line across picture 5cm from bott.

C410 ( 1nf ) plamensl 14-09-2004

Bush 1452T Field collapse LA7830 field o/p chip plamensl 14-09-2004

Bush 1452T No R/C operation - front controls ok

r/c pulses reaching IC602 pin12 - C68212Y chip faulty

plamensl 14-09-2004

Bush 1452T No sound/pic - field collapse

R425 2R7 5w (estimate) & ZD402 16v 1.2w s/c

plamensl 14-09-2004

Bush 1452T Onwa WHISTLE ON AUDIO SOUND SEVERELY DISTORTED

C143 10uF 16v OC plamensl 14-09-2004

Bush 1473T Dead - off with flash BUZ77B chopper s/c; R805 330k hi res at 570k; R889 0R47 o/c & replaced TDA4605-2 & C831 1µ 50v as a precaution

plamensl 14-09-2004

Bush 1473T To enter serv mode on "11AK08" version (printed on front edge of chassis)

1 Press vol- on the keypad 2 Press 'prog' on the handset 3 Press '--' on the handset 4 Press TV on the handset (That's the one with the blank screen on it) Use prog + & - to select parameters and vol + & - to alter values. The red button stores and the exit with 'TV'

plamensl 14-09-2004
































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Bush 1473T 11AK08 Line tearing C818 (47MFD 160VW), +B line smoothing capacitor (high ESR).

plamensl 14-09-2004

Bush 1473T 11AK08 Pic int smeary or dissappears

Dry joint PL901 earth wire on crt base panel

plamensl 14-09-2004

Bush 1473T 11AK20 Field collapse R709 sm 10k adjacent to FOP chip not properly soldered in

plamensl 14-09-2004

Bush 1474T Dead Replace D811 in the secondary of the PSU. I used a BYV28/150 as a replacement

plamensl 14-09-2004

Bush 1474T (AK20) Dead D811 in sec of psu - used BYV28/150

plamensl 14-09-2004

Bush 1485N AK19 Int off aft 5 - 10 mins Check for dry joints on regs - on big heatsink

plamensl 14-09-2004

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Found: 627

Bush 1495N 11AK19 Dead R806 22k 1w safety res o/c

plamensl 14-09-2004

Bush 1496 Dead Fuse EM103 o/c, EM104 ww filter melted, D103/4 u/s, R109 330k, Q101 FET 5N90 replaced with BUZ91A, TDA4506 smp chip, R101 5R6 5W

plamensl 14-09-2004

Bush 14971TV No red Q903 BF421 s/c plamensl 14-09-2004

Bush 1497ITV/3 11AK20S Height stretched & width in on rh side

HT pot never been soldered

plamensl 14-09-2004

Bush 1500 Brightness excessive with little control

D406 1N4148 o/c plamensl 14-09-2004

Bush 1500 Off tune & won't stop in search

T101 vis detector coil replaced

plamensl 14-09-2004

Bush 1500 Stuck on 1 chan with no response to R/C

Check front controls & aux contacts on mains sw for leak (Check for black glue)

plamensl 14-09-2004

Bush 1500 Weak, washed out pic - no sync

Q104 2SC1815 plamensl 14-09-2004

Bush 1557NTX Dead. ZD402 Zenor , R422 ( 3.3R 2W ) , C909 , 910 ( 47uf ) , Z901 ( 8.2v ) , Z902 , Q904

plamensl 14-09-2004

Bush 1557NTX If standby selected pic becomes dark & sound mutes

Q907 ( 2SC2335 ) plamensl 14-09-2004

Bush 1557NTX No sound or raster - HT line Ok.

R919 ( 0.68ohm ) fusible o/c.

plamensl 14-09-2004

Bush 1557NTX White raster with flyback lines.

Check for 12v on ZD402 , if low check D404 & print between D404 & R422

plamensl 14-09-2004





















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Bush 1557NTX (Onwa) Tuning missing No 33v tuning supply due to broken print by scart socket - due to rough insertion of scart plug

plamensl 14-09-2004

Bush 2002 Dead ZD401 12v 1w zener, R419 5R6 3w & 2 caps in psu - HT = 115v

plamensl 14-09-2004

Bush 2002 Onwa NO 12v FROM LINE STAGE

R421 ( 0.68ohm ) , R419 ( 5.6ohm ) , ZD401 ( BZX61-C12 ) C909 & C919 both ( 47uF ) 63V

plamensl 14-09-2004

Bush 2002A low contrast R316 100k o/c plamensl 14-09-2004

Bush 2004 Line lock weak R491 47k plamensl 14-09-2004

Bush 2009 3 col spots on screen at sw off

crt faulty plamensl 14-09-2004

Bush 2011 Tripping D605 leaky plamensl 14-09-2004

Bush 2014 Dead R504 ( 150K ) plamensl 14-09-2004

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Found: 627

Bush 2014 Foldover C304 ( 4.7uF ) plamensl 14-09-2004

Bush 2014 No pic with 8 lines across screen 1/4 way down

R704 100R faulty - from pin 5 LOPTx via D605

plamensl 14-09-2004

Bush 2020 180v rail low at about 105v.

C416 ( 10uf 250v ) Adj to LOPT.

plamensl 14-09-2004

Bush 2020 Blank raster - A1 brings up pic but then same

IC501 ( TDA3562A-TFK ) , A1 control not set correctly.

plamensl 14-09-2004

Bush 2020 Blank raster with vertical black bands.

IC02 socket. plamensl 14-09-2004

Bush 2020 Bright white screen or dark picture.

R424 ( 27k ) o/c. plamensl 14-09-2004

Bush 2020 Brightness varies. R425 ( 56k ) o/c. plamensl 14-09-2004

Bush 2020 Dead R816 ( 4.7ohm ) Q801 s/c R808 ( 270K ) o/c

plamensl 14-09-2004

Bush 2020 Dead - B+ volts present - no 12v to line dr tr

R811 1R1/2w safety res o/c

plamensl 14-09-2004

Bush 2020 Dead - Fuse Not Blown R816 ( 4.7ohm ) o/c , Q801 o/c , R808 ( 270K ) o/c

plamensl 14-09-2004

Bush 2020 Dead - HT Ok - no line drive.

C808 ( 1000uf 25v ) , D805 s/c.

plamensl 14-09-2004

Bush 2020 Dead with burning smell - fuse Ok.

C808 ( 1000uf 25v ) , R811 ( 1ohm ) o/c.

plamensl 14-09-2004

Bush 2020 Dead. C820 ( 100pf ) , C817 ( 10uf ) , C802 ( 100uf ) , R801 ( .68R ) , C810220uf ) , IC801.

plamensl 14-09-2004

Bush 2020 High 110v HT. C818 ( 1uf 50v ) plamensl 14-09-2004

Bush 2020 Int blank raster - red frame collapse.

Drys on C307. plamensl 14-09-2004

Bush 2020 Int blank screen &/or thin red line across screen

Dry joint C307 - hidden under a strut

plamensl 14-09-2004

Bush 2020 INT BLANK SCREEN OR SOMETIMES THIN LINE LIKE FIELD

C307 HIDDEN BY PLASTIC STRUT

plamensl 14-09-2004







































Bush 2020 Int colour Crack in print around dec chip

plamensl 14-09-2004

Bush 2020 Int no picture. IC02 ( TPU2732 ) plamensl 14-09-2004

Bush 2020 Int red frame collapse. Drys on C307. plamensl 14-09-2004

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Found: 627

Bush 2020 JUMPS IN AND OUT OF SBY DURING CHAN CHANGE OR ADJU

CHANGE IC2 MDA2061 EEPROM

plamensl 14-09-2004

Bush 2020 Jumps in/out of st/by at chan change

IC2 MDA2061 EEPROM plamensl 14-09-2004

Bush 2020 Long time for pic to appear at sw on

Due to ageing tube with auto grey scale - fit 100k res between "auto" & 12v pins on CRT base

plamensl 14-09-2004

Bush 2020 No col & Chan UP control does Chan DOWN

Reprogram micro (MDA2061 eprom) - TV Feb94

plamensl 14-09-2004

Bush 2020 No colour Check TDA3562A by subst & R251 18k o/c (If using non TFK chip as replacement change R513 from 180k to 68k & R515 from 120k to 150k

plamensl 14-09-2004

Bush 2020 No display - set trips after a few minutes.

C22 ( 470uf plamensl 14-09-2004

Bush 2020 NO FIELD , SOUND OR CHAN DISP.

R422 OC. 2R0 plamensl 14-09-2004

Bush 2020 NO SOUND OR PICTURE OR CHANNEL DISPLAY

TR1 + TR2 BC237 IN RESET CCT

plamensl 14-09-2004

Bush 2020 Patterning & field cramping in centre

C806 1000µ 16v plamensl 14-09-2004

Bush 2020 Pic shifted over - line phase out

R419 470k o/c plamensl 14-09-2004

Bush 2020 Picture takes a long time to come on.

fit 100K res between the 'auto' & '12V

plamensl 14-09-2004

Bush 2020 PSU screaming loudly. C818 ( 1u f , 50v ) C806 ( 1 , 000u f , 16v ) C808 ( 1 , 000u f , 25v )

plamensl 14-09-2004

Bush 2020 Red Raster. IC ( TDA3562A-TFK ) plamensl 14-09-2004

Bush 2020 Slow startup. Main smoothing electrolytic ( 120uf 400v )

plamensl 14-09-2004




































Bush 2020 Snowy raster - display shows 88.

SAA1293A-03 ( see also Bush reprogramming guides )

plamensl 14-09-2004

Bush 2020 Sound poor R608 100k feedback res o/c

plamensl 14-09-2004

Bush 2020 Squealing tripping. LOP transistor s/c , R811 ( 1R ) o/c , check for dry on C808.

plamensl 14-09-2004

Bush 2020 Takes a long time for picture to come appear.

IC501 ( TDA3562A-TFK ) plamensl 14-09-2004

Bush 2020 Takes up to 30 mins for picture to appear.

Change IC501 to non TFK type & change R513 to 68k , R515 to 150k

plamensl 14-09-2004

Bush 2020 TDA3562A REPLACEMENT

IF PHILIPS TYPE BEING FITTED CHANGE R513 FROM 180k to ( 68K ) & R515 from 120K to ( 150K ) if TFK type then leave originals in

plamensl 14-09-2004

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Repair tips



Found: 627

Bush 2020 Thin black lines across picture.

C806 ( 1000uf ) o/c. plamensl 14-09-2004

Bush 2020 Uncontrollable brightness.

C416 ( 10uf 250v ) o/c. plamensl 14-09-2004

Bush 2020 Vert black band 2 inches from rh side

R419 470k ?w o/c plamensl 14-09-2004

Bush 2020 VERTICAL BLACK LINE LEFT SIDE

R419 470k plamensl 14-09-2004

Bush 2020T Flashing pic - int blanked off & no Txt

OK with Txt o/p plug dis'd Sus TPU2732 chip

plamensl 14-09-2004

Bush 2020T NO TEXT OR BLANK SCREEN

D.J.s ON TEXT BOARD. plamensl 14-09-2004

Bush 2020T No txt - p100 appears unlocked when in mix

txt not synced VAD1250 chip u/s

plamensl 14-09-2004

Bush 2020T TRIPPING HT LOW AT 55v

LOPT SC plamensl 14-09-2004

Bush 2020T Trips with HT low at 55v

When LOP stage dis'd, HT is normal - LOPTx faulty

plamensl 14-09-2004

Bush 2020T Txt in mix only & unsynced

IC01 VAD1250 chip on txt pcb

plamensl 14-09-2004

Bush 2023 Dead check rect diodes, 330R, 0R47, 820R res, BUZ90 & 2R2 5w ww res all in psu

plamensl 14-09-2004

Bush 2023T Tuning lock on tho' shows off in menu

Chans 87-99 had lock on preventing other chans from tuning

plamensl 14-09-2004

Bush 2023TA Field collapse - could be int

C703 47000pf plamensl 14-09-2004

Bush 2028T (11AK10) etc Standby is initiated when "Vol +" or "Vol -" selected

Corrupted memory IC502 - password reqd when replacing which requires a procedure too long to list here. See Serge's email on subject dated 26/10/00

plamensl 14-09-2004

































http://www.eserviceinfo.com/index.php?what=search2&searchstring=2023TA

http://www.eserviceinfo.com/index.php?what=search2&searchstring=2028T+%2811AK10%29+etc


Bush 2028T 11AK10-15 Dead Replace R809 (.47ohm) o/c-Q801(BUZ77B) s/c-R805 (330k) o/c - R821 (2.2ohm) surge limit o/c.

plamensl 14-09-2004

Bush 2029T (Onwa) Field collapse High HT- C909 47µ, C910 10µ, ZD402 12v zener, R442 1R2 2.5w safety, TDA3653B field o/p chip all replaced

plamensl 14-09-2004

Bush 2029T Onwa Will not sw to st/by after the usual blow up & replacement of 47µ caps etc

Q507 BUT11AF s/c & driver Q506 2N5401 o/c - NOTE Q506 markings wrong on pcb - can use 2N5401 in lieu

plamensl 14-09-2004

Bush 2031 11AK19-5 Dead with no power led HT only 60v - dis'd R823 to opto got HT up to 113v but with poor reg - C829 smoothing cap faulty

plamensl 14-09-2004

Bush 2044 Poor sound - erratic flashes on picture.

Tweak quadrature coil , flashes caused by tuner.

plamensl 14-09-2004

Bush 2051T Squeals in st/by - ok when On

replace C114 100µ, C113 22µ, C115 220µ & C116 10µ in psu

plamensl 14-09-2004

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http://www.eserviceinfo.com/index.php?what=search2&searchstring=2028T+11AK10-15

http://www.eserviceinfo.com/index.php?what=search2&searchstring=2029T+%28Onwa%29


http://www.eserviceinfo.com/index.php?what=search2&searchstring=2031+11AK19-5



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Repair tips



Found: 627

Bush 2052T Lack of contrast R316 100k 1/2w between relay & FOP chip

plamensl 14-09-2004

Bush 2052T No sync - line or field Remove black glue in area of IC301

plamensl 14-09-2004

Bush 2052T/A No sound Q616 2SC1815 in ident feed to micro IC601 (thinks there's no i/p signal)

plamensl 14-09-2004

Bush 2057 2059 2157 2 Dead - no StBy R919 0R68 oc ( pin 4 chopper Tx )

plamensl 14-09-2004

Bush 2057NTX St/by only ZD402 12v s/c, R423 0R68 safety res o/c

plamensl 14-09-2004

Bush 2057NTX stuck in st/by ZD402 12v zener, R422 o/c, check Q901,2,3, ZD901&2, C909&10, R907

plamensl 14-09-2004

Bush 2057NTX Stuck in standby. ZD402 SC R423 0R68 OC IF NO STBY Q907 SC

plamensl 14-09-2004

Bush 2057NTX Won't go into st/by Q907 2SC2335 leaky in st/by sw cct

plamensl 14-09-2004

Bush 2059 2159NTX Onwa Pic alternates with blank raster & corrugated verts

C915 100µ 160v in HT supply o/c

plamensl 14-09-2004

Bush 2059NTX Dead - HT present R919 0R68 o/c in LT supply

plamensl 14-09-2004

Bush 2059NTX Height fluctuates/reduces & NICAM sound dropout

18v supply low at 11v due to R919 1R high res

plamensl 14-09-2004


Q907 ( 2SC2335 )

plamensl 14-09-2004























http://www.eserviceinfo.com/index.php?what=search2&searchstring=2052T%2FA

http://www.eserviceinfo.com/index.php?what=search2&searchstring=2057+2059+2157+2





http://www.eserviceinfo.com/index.php?what=search2&searchstring=2059+2159NTX+Onwa





Bush 2059NTX No raster, no sound, EHT 32KV C910 10uF, C909 47uF, R422 3R3 2w, ZD402 12 volt zener and R423 .68ohm

plamensl 14-09-2004

Bush 2059NTX No sound or raster - HT line Ok.

R919 ( 0.68ohm ) fusible o/c.

plamensl 14-09-2004

Bush 2059NTX Patterning when cold - possibly with no col

C125 100mfd 16v between IC103 & IC101 near front of pcb

plamensl 14-09-2004

Bush 2059NTX St/by only R120 (100K ) power unit O/C

plamensl 14-09-2004

Bush 2059NTX Trips No 17v o/p from psu sec - 6R8 surge lim res o/c

plamensl 14-09-2004

Bush 2059NTX Wont sw to st/by Q907 2SC2335 plamensl 14-09-2004

Bush 2059TX Brightness variations C424 10µ 250v - video o/p supply smoother

plamensl 14-09-2004

Bush 2063NTX Field collapse C701 4n7 leaky plamensl 14-09-2004

page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32












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Repair tips



Found: 627

Bush 2063NTX/A Dead s/c BUZ90A o/c 330 K ( R805 )

plamensl 14-09-2004

Bush 2064NTX Field collapse Check sawtooth wform at pin 42 IC100 TDA8361, if absent replace R149 3M3

plamensl 14-09-2004

Bush 2068NTX 11AK10-17 Dead with Q801 P3NA61 Power FET s/c

Replaced with BUZ90 or IRFBC40, TDA4605-2, R809 0R47 1/2w safety res, 330k & R803 820k

plamensl 14-09-2004

Bush 2085NTX Field & line collapse dry joints scan coils plug (line) & IC401 fop chip TDA8170

plamensl 14-09-2004

Bush 2114 180v rail low at 105v.

C416 ( 10uf 250v ) Adj to LOPT.

plamensl 14-09-2004

Bush 2114 4 black bands across screen

C806 1000µ 16v, C307 0µ33

plamensl 14-09-2004



plamensl 14-09-2004




R424 ( 27k ) o/c. plamensl 14-09-2004


Bush 2114 Dead - Fuse Not Blown

R816 ( 4.7ohm ) o/c , Q801 o/c , R808 ( 270K ) o/c

plamensl 14-09-2004


C808 ( 1000uf 25v ) , D805 s/c.

plamensl 14-09-2004


C808 ( 1000uf 25v ) , R811 ( 1ohm ) o/c.

plamensl 14-09-2004

Bush 2114 Dead with dying clicks Pri HT, no sec HT

Drive wfrm to chopper tr weak - C802 100µ in drive cct faulty

plamensl 14-09-2004

Bush 2114 Dead with whistle & relay chatter

LOPTr 2SD1911 s/c - used BU508DF, C818 1µ o/c, R811 1R 1/2w o/c also replaced R808 270k as a precaution

plamensl 14-09-2004





















http://www.eserviceinfo.com/index.php?what=search2&searchstring=2063NTX%2FA


http://www.eserviceinfo.com/index.php?what=search2&searchstring=2068NTX+11AK10-17














Bush 2114 Dead with whistling for 2 secs at sw on

BU508A chopper s/c; R816 4R7 o/c; R811 1R o/c; C818 was cause

plamensl 14-09-2004


plamensl 14-09-2004

Bush 2114 Goes off aft 3 mins IC5 5v reg on remote/tuning pcb overheats - C22 470µ s/c

plamensl 14-09-2004

Bush 2114 High HT. C818 ( 1uf 50v ) plamensl 14-09-2004


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Repair tips



Found: 627

Bush 2114 No pic - blanked off - sound ok

ReplaceTDA3662A TFK & CAREFUL A1 adjust

plamensl 14-09-2004

Bush 2114 NO SOUND OR PICTURE OR CHANNEL DISPLAY

TR1 + TR2 BC237 IN RESET CCT

plamensl 14-09-2004

Bush 2114 Red raster. IC501 ( TDA3562A-TFK ) plamensl 14-09-2004

Bush 2114 Servicing Notes on the Bush 2114

See TV Mag Jul 1993 plamensl 14-09-2004

Bush 2114 SHUTS DOWN AFTER 2-3 mins

C22 470uF SC ON REMOTE PCB

plamensl 14-09-2004

Bush 2114 Slow to startup. Mains smoothing con ( 120uf 400v )

plamensl 14-09-2004



plamensl 14-09-2004


plamensl 14-09-2004





plamensl 14-09-2004


C806 ( 1000uf ) o/c. plamensl 14-09-2004


C416 ( 10uf 250v ) o/c. plamensl 14-09-2004

Bush 2114 Whines, no pic, field cramp

C806 1000µ 16v, C830 220µ 25v, C808 1000µ 16v, C810 220µ 160v; caused by C818 1µ 50v faulty

plamensl 14-09-2004

Bush 2114/2020 Fizzing & squealing & tearing of verts - HT excessive

C818 1µ 50v - C810 HT res cap overheats

plamensl 14-09-2004

Bush 2114T Bright raster - sound & display Ok.

Q902 ( BC308 ) , 12k , 58k on CRT base.

plamensl 14-09-2004


































http://www.eserviceinfo.com/index.php?what=search2&searchstring=2114%2F2020



Bush 2114T Dead C818 1µ, C802 100µ brought back 110v HT but no line osc - C808 dry joints

plamensl 14-09-2004

Bush 2114T Dead R808 270k o/c, BU508A chopper s/c, 3A fuse o/c & TDA4601

plamensl 14-09-2004

Bush 2114T Int switch on from cold

C801 47µ C802 100µ 63v plamensl 14-09-2004

Bush 2114T No col TDA3652A - if non TFK used connect 820k between pins 1 & 19

plamensl 14-09-2004

Bush 2114T No colour. Check o/c at plug 10 , TDA if not T/funk Change R515 ( 133k ) R513 ( 68k )

plamensl 14-09-2004

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Repair tips



Found: 627

Bush 2114T No Txt - sw over but pic remains

Check pin 22 DPU2540 IC903 for 5v pulse; if missing resolder thro' board links

plamensl 14-09-2004

Bush 2114T POOR STARTING CHECK , C801 ( 47uF ) C802 ( 100uF ) THERMISTOR OR POSS L801 OC

plamensl 14-09-2004

Bush 2114T Slow startup - Ok after a few mins.

Change R515 ( 133k ) , R513 ( 68k ) on decoder PCB.

plamensl 14-09-2004

Bush 2146NTX Dead with Green LED flashing

LOPtx CHS order code ALB586

plamensl 14-09-2004

Bush 2151T Ringing/whistling from PSU above normal pic

C115 22µ 35v & C116 10µ 35v leaky

plamensl 14-09-2004

Bush 2151T WHISTLES C115 22u 35v C116 10u 35v IN POWER SUPPLY

plamensl 14-09-2004

Bush 2152T (Onwa) Field collapse - no sound R419 5R6 hi, ZD901fried, ZD401 12v faulty - change C909 & 911 47µ

plamensl 14-09-2004

Bush 2152T Onwa Blank swirling patterned raster & no sound

Check replace elects in psu sec

plamensl 14-09-2004

Bush 2157NTX Dead - f901 blown. Q904 ( 2SD1431 ) s/c.

plamensl 14-09-2004

Bush 2157NTX Dead - line transistor Q402 s/c - Ht high.

Replace ZD901/902 , Q901/2/3/7 , C909 , C910 , R918 , check pcb around Q907

plamensl 14-09-2004

Bush 2157NTX Dead - no HT on line transistor Q402.

R918 o/c. plamensl 14-09-2004

Bush 2157NTX Dead - set emits faint whistle.

IC102 ( TDA8305A ) plamensl 14-09-2004

Bush 2157NTX Frame collapse. IC401. plamensl 14-09-2004

Bush 2157NTX Partial frame collapse may be Int.

R410 plamensl 14-09-2004



























http://www.eserviceinfo.com/index.php?what=search2&searchstring=2152T+%28Onwa%29









Bush 2157NTX Set pulses at high brightness levels.

R918 high. plamensl 14-09-2004

Bush 2157NTX Onwa Low HT Check 0R68 res in series with HT rect also 100k in sw dr cct - 2SC2335 & 2SA1013 had overheated so also replaced

plamensl 14-09-2004

Bush 2159NTX blank raster - no sound tuners 12v at zero, R327 2R2 o/c and s/c in tuner due to solder splash

plamensl 14-09-2004


Q907 ( 2SC2335 ) plamensl 14-09-2004

Bush 2159NTX White raster with flyback lines.

Check for 12v on ZD402 , if low check D404 & print between D404 & R422

plamensl 14-09-2004

Bush 2160NTX Dead UC3844 in psu, LOPTr MJF18204 s/c (used BUT12A in lieu)

plamensl 14-09-2004

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Repair tips



Found: 627

Bush 2160NTX G1000 Bright raster with sound

No HT to RGBs - R315 10R pin 9 LOPTx o/c

plamensl 14-09-2004

Bush 2163NTX Dead with smoke R809 0R47 fusible burnt; s/c chopper tfmr

plamensl 14-09-2004

Bush 2163NTXA Int sound caused by bad joints UL302 coill near TDA2546 on Nicam pcb

plamensl 14-09-2004

Bush 2167NTX Dead R5 680K 1 watt in PSU start up circuit

plamensl 14-09-2004

Bush 2167NTX Dead - chopper tr BUZ90 s/c

Check 220k & 330k res in psu

plamensl 14-09-2004

Bush 2167NTX Field - only 2" scan across centre, no sound/pic

R25 12k 1W in 33v line o/c

plamensl 14-09-2004

Bush 2169NTX Dead R5 680k & check chopper tr

plamensl 14-09-2004

Bush 2169NTX Dead with 2.5A fuse o/c

R1 5R6 o/c, R4 270k o/c, Q1 MOSFET - use BUZ77B in lieu

plamensl 14-09-2004

Bush 2169NTX Dead with mains fuse blackened

Q1 P3NA90 chopper tr s/c, R4 270k & R5 680k could be hi res & check C11 47µ & C12 1µ

plamensl 14-09-2004

Bush 2214 LINE OP TR SC R756 DRY JOINTED plamensl 14-09-2004

Bush 2214 No pic - buzzing PSU R756 5R 2w in base loptr hi res & C754 470pf 2kv o/c

plamensl 14-09-2004

Bush 2321 180v rail low at 105v. C416 ( 10uf 250v ) Adj to LOPT.

plamensl 14-09-2004



plamensl 14-09-2004




R424 ( 27k ) o/c. plamensl 14-09-2004



C808 ( 1000uf 25v ) , D805 s/c.

plamensl 14-09-2004





















http://www.eserviceinfo.com/index.php?what=search2&searchstring=2160NTX+G1000


http://www.eserviceinfo.com/index.php?what=search2&searchstring=2163NTXA
















Bush 2321 Dead Fuse Not Blown R816 ( 4.7ohm ) o/c , Q801 s/c , R808 ( 270K ) o/c

plamensl 14-09-2004


C808 ( 1000uf 25v ) , R811 ( 1ohm ) o/c.

plamensl 14-09-2004


plamensl 14-09-2004

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Repair tips



Found: 627

Bush 2321 High HT. C818 ( 1uf 50v ) plamensl 14-09-2004


Bush 2321 No colour IC TDA R515 , R513 mod if changed to a none Telefunken type TDA.

plamensl 14-09-2004

Bush 2321 Red raster. IC501 ( TDA3562A-TFK ) plamensl 14-09-2004

Bush 2321 Slow to startup. Mains smoothing con ( 120uf 400v )

plamensl 14-09-2004



plamensl 14-09-2004

Bush 2321 Sound - Uncontrolable. IC SAA1293 Faulty plamensl 14-09-2004


plamensl 14-09-2004





plamensl 14-09-2004


C806 ( 1000uf ) o/c. plamensl 14-09-2004


C416 ( 10uf 250v ) o/c. plamensl 14-09-2004

Bush 2321T Dead R601 10k 2.5w burnt up, C600 10µ 250v, C603 0µ047 250v & LOPTX faulty which was start of the trouble

plamensl 14-09-2004

Bush 2321T Distorted sound. IC SAA1293. plamensl 14-09-2004

Bush 2321T No colour. Check o/c at plug 10 , TDA if not T/funk Change R515 ( 133k ) R513 ( 68k )

plamensl 14-09-2004

Bush 2321T No pic or int loss of pic Through the board links dry joints on Txt panel

plamensl 14-09-2004






































Bush 2321T No pic/sound - st/by colons fade away

C802 100µ 16v in chopper Tr base

plamensl 14-09-2004

Bush 2321T NO PICTURE OR SOUND STBY COLONS FADE AFTER 10secs

C802 100uF 16v CHOPPER TRANSISTOR COUPLER

plamensl 14-09-2004

Bush 2321T Slow startup - Ok after a few mins.

Change R515 ( 133k ) , R513 ( 68k ) on decoder PCB.

plamensl 14-09-2004

Bush 2420 sound muting on some chans & no search lock

sync pulses at Q403 varying - base bias res R424 750k o/c

plamensl 14-09-2004

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Found: 627

Bush 2514 Dead - no psu operation R800 820k, R809 270k, C819 100µ 10v, C820 1µ 100v, C810 100µ 16v

plamensl 14-09-2004

Bush 2514T Dead R801 2R7 4w dropper o/c; Q800 BU508A chopper tr s/c; R800 820k, R809 270k & 2 mains rects s/c all replaced

plamensl 14-09-2004

Bush 2515T DEAD AFTER REPLACING 270k + 4R7 + CHOPPER TRANSIST

IC803 LM317T 12v REG US

plamensl 14-09-2004

Bush 2515T St/by only IC803 LM317T 12v reg chip

plamensl 14-09-2004

Bush 2520 Low gain, noisy pic TDA4505 IC100 plamensl 14-09-2004

Bush 2520 No pic or crt heaters - sound ok

R605 5k6 in HT feed to driver tr o/c

plamensl 14-09-2004

Bush 2520 POOR START UP R802 DRY R800 820k HIGH

plamensl 14-09-2004

Bush 2520 Several attempts reqd to switch on

R802 therm dry joints, R800 820k hi res

plamensl 14-09-2004

Bush 2520 Sound ok no pic R605 ( 5.6K ) o/c plamensl 14-09-2004

Bush 2520 TUNER LOOKS LOW GAIN TDA4505 US plamensl 14-09-2004

Bush 2520T From cold will come on if warm will not

R809 ( 820K ) o/c plamensl 14-09-2004

Bush 2520T Won't switch on from warm

R809 820k o/c - how did it work at all?

plamensl 14-09-2004

Bush 2521T Faint raster with fb lines Dry joint pin 5 K501 plug resulted in TDA3661A chip blowing

plamensl 14-09-2004

Bush 2521T Notes on the Bush 2521T See TV Mag Feb 1994 plamensl 14-09-2004

Bush 2550NTX Cuts out aft several hrs with HT rail pulsing

R816 47R sm feedback to chopper chip int o/c

plamensl 14-09-2004





































Bush 2550NTX Preventative maintenance Check scan coil plug for dry joints - if burn up occurs could be write off

plamensl 14-09-2004

Bush 2557NTX Dead with blackened mains fuse

BR901 mains bridge rect s/c, C905 220µ 400v s/c

plamensl 14-09-2004

Bush 2557NTX Onwa Dead - s/c LOPTr & buzzing

L401 dry joint B+=145v

plamensl 14-09-2004

Bush 2557NTX Onwa Dead with psu buzzing - LOPTr s/c

Dry joints L401 & fit BU2508AF LOPTr - check separate psu caps for hi HT - 10 & 47µ

plamensl 14-09-2004

Bush 2568NTX Dead - bows LOPTr Check drys on scan coil plug AND pins

plamensl 14-09-2004

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Repair tips



Found: 627

Bush 2568NTX EW & width R629 2R7 1/2w o/c plamensl 14-09-2004

Bush 2568NTX Int line shift with foldover - LOPTr damaged

R451 dry joints plamensl 14-09-2004

Bush 2568NTX Lack of width & E-W R629 2R7 o/c & dry joints in area

plamensl 14-09-2004

Bush 2571NTX St/by only R826 470k ?w o/c in psu sec

plamensl 14-09-2004

Bush 2571NTX 11AK19 Blank raster, no sound, ok thro' SCART & OSD OK

IC807 7805 regulator,supply was down to 2.5V

plamensl 14-09-2004

Bush 2571NTX 11AK19 Bright green pic with fb lines

TDA108JF on crt base plamensl 14-09-2004

Bush 2571NTX 11AK19 Field collapse Check R704 100R safety res, if o/c change also TDA8351 FOP chip. Check 15v supply pin 3 IC701 if missing check comps from pin 6 LOPTx - D606 BA157 o/c

plamensl 14-09-2004

Bush 2571NTX 11AK19 No pic, sound /text / menu and on screen graphics all work ok

Q500 and Q504 in metal can burnt out. No reason found

plamensl 14-09-2004

Bush 2571NTX 11AK19 St/by only with psu ticking - HT about 50% of normal

Replace R866 and R867 (0.33 ohms) psu secondary LT supplies

plamensl 14-09-2004

Bush 2571NTX 11AK19 Tripping psu IC301 TDA6108JF(RGB chip) & R914 (1R) o/c both on CRT base & check LOPTr

plamensl 14-09-2004

Bush 2571NTX 11AK19E3 Narrow pic with no E-W corr adj

R629 safety res 2R7 1/2w feeding BUK444 o/c - C630 dry joint caused it

plamensl 14-09-2004

Bush 2620 Flashes randomly appear across screen

VR101 AGC preset loose conns

plamensl 14-09-2004

Bush 2620 RANDOM FLASHES ON SCREEN

AGC PRESET INT OC plamensl 14-09-2004

























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http://www.eserviceinfo.com/index.php?what=search2&searchstring=2571NTX+11AK19E3




Bush 2714 Dead with 2.5A mains fuse blown

Tr801 BU508A s/c, R801 2R2 5w o/c, R809 270k o/c, IC801 TDA4601 & therm TH802 CHS pt no 12001GT

plamensl 14-09-2004

Bush 2714 Stuck in st/by R603 3k9 5w HT feed to LOP o/c

plamensl 14-09-2004

Bush 2714 Stuck in StBy - Psu ok

R603 3k9 5W oc ( line driver feed )

plamensl 14-09-2004

Bush 2720 BRIGHTNESS CONTROL NOT WORKING 2 LOW HEIGHT 3 BR

TR901 SC ON TUBE BASE 2 D2801 33v ZENER SC 3 R901 ON TUBE BASE OC

plamensl 14-09-2004

Bush 2720 Lack of height D801 ( 33V ) s/c plamensl 14-09-2004

Bush 2720 Lack of width & corrugated verticals

HT smoothing cap C827 47µ 250v

plamensl 14-09-2004

Bush 2720 No brightness control - OSD works ok

Tr901 BC558 on crt base plamensl 14-09-2004

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Found: 627

Bush 2720 11AK03 Uncontrollable brightness & flyback lines.

R901 ( 220 ) on tube base o/c.

plamensl 14-09-2004

Bush 2721 Lack of height D2801 33v zener s/c

plamensl 14-09-2004

Bush 2721 line pulling/tearing/lack of width C827 47µ 160v plamensl 14-09-2004

Bush 2722 Uncontrollable brightness with fback lines

R901 220R on crt base o/c

plamensl 14-09-2004

Bush 2768NTXSIL St/by only - LOPTr blown Also replace line dr tr 2SC1573

plamensl 14-09-2004

Bush 2814T Dead - no EHT or htrs R603 3k9 5w HT feed to LOP o/c

plamensl 14-09-2004

Bush 2814T NO EHT R603 3k9 5w OC

plamensl 14-09-2004

Bush 2820T Line pulling, tearing or bent verts - lack of width

C827 47µ 160v HT res cap

plamensl 14-09-2004

Bush 2850/2855 Service Mode access Press Red & blue buttons together then P- & V+ together within 5 secs

plamensl 14-09-2004

Bush 2850NTX Dead Dry joints scan coil plug & TEA5101 fop chip & TEA5101 on crt base

plamensl 14-09-2004

Bush 2850NTX No pic with burning smell burn up on red wire of scan coil plug - wired direct to pcb

plamensl 14-09-2004

























http://www.eserviceinfo.com/index.php?what=search2&searchstring=2768NTXSIL




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Bush 2850NTX Schneider TV4 Bent verticals and pulsating width (Scene Dependent)

Replace CC808 4N7 SMD primary side of PSU you will probably find that the pcb in this area has taken some heat.

plamensl 14-09-2004

Bush 2850NTX TV4 Line collapse Can be dry joints scan coil plug but C419 330nF 400v scan coupling cap burnt & o/c in this case

plamensl 14-09-2004

Bush 2850NTX TV8 Dead apart from led flicker at sw on

C203 47µ 250v - checked ok out of cct

plamensl 14-09-2004

Bush 2850NTX-A Dead aft brief micro activity Micro reqs sync pulse at pin 26 within 1 sec from line to function. This was missing due to T301 BC547B in line stage leaky

plamensl 14-09-2004

Bush 2850NTX-A Line & field collapse (single dot) Burnt line scan coils plug & TDA8170 fop chip, D402 BA157, fus res R408 o/c

plamensl 14-09-2004

Bush 2850NTX-MS slow start up - reset problem IC101 pin 33 needs 4.8v to start up mod - add 1µ & 100k res to 5v line

plamensl 14-09-2004

Bush 2850NTX/A Dead - no line scan Scan pug/skt melted, after repair still faulty due to C307 330nF scan coupling cap o/c & check dry joints

plamensl 14-09-2004

Bush 2850NTX/MS no graphics, front panel buttons are inoperative, remote is inoperative,no sound, no picture - only blank full size raster with 4-5 coloured horizontal lines on the screen.

no flyback supply voltage to frame IC TDA8351 pin 6 caused by R438 0.22 Ohm o/c (near LOPT).

plamensl 14-09-2004

Bush 2850NTXA Dead with squegging noise from speaker

Cry joints C307 in line stage & field coll then visible, TDA8170 & R408 0R22

plamensl 14-09-2004

page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32


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Repair tips



Found: 627

Bush 2850NTXA E-W faulty T302 (BC547) S/C and T303 (BC557) leaky.

plamensl 14-09-2004

Bush 2850NTXA Field collapse TDA8170 & R408 0R22

plamensl 14-09-2004

Bush 2857 off C914 4n7 across HT rect leaky

plamensl 14-09-2004

Bush 2857 Poor V & H sync C127 in screened can housing IC102 TDA3805

plamensl 14-09-2004

Bush 2857NTX Blank raster No 12v supply to tuner - R327 2R2 o/c

plamensl 14-09-2004

Bush 2857NTX Blank raster - sound ok 12v to IC397 & 304 low - R435 0R68 1w o/c

plamensl 14-09-2004

Bush 2857NTX Blank raster - sound ok R436 6R8 hi res plamensl 14-09-2004

Bush 2857NTX Blank screen & no controls 5v supply drops to 3.4v out of st/by - IC103 faulty

plamensl 14-09-2004

Bush 2857NTX C926 blown/smoking - HT unstable

C908 & C910 plamensl 14-09-2004

Bush 2857NTX Dead o/c 0.68 ohm 1 Watt resistor on the secondary of the chopper transformer.

plamensl 14-09-2004

Bush 2857NTX Dead - off with bang/smoke

C925 1000µ 25v, C926 22µ 160v, R916 0R68 1w safety res, C910 47µ 25v & other unreliable caps as in Onwa

plamensl 14-09-2004

Bush 2857NTX Dead apart from Screaming PSU

145v HT safety res smoking & hi res; 16v rail safety res o/c (Both inc yellow sleeving) - main cause C926 22µ 160v s/c - usual cause of 16v rail demise = Onwa psu caps

plamensl 14-09-2004


































Bush 2857NTX Field bounce - esp when cold

C127 3µ3 off pin 10 IC102

plamensl 14-09-2004

Bush 2857NTX Flat looking pic R433 150k in beam lim

plamensl 14-09-2004

Bush 2857NTX Frame bounce Adj AGC plamensl 14-09-2004

Bush 2857NTX HT high and uncontrollable chopper base control tr leaky

plamensl 14-09-2004

Bush 2857NTX Left hand side darker than right

C424 10µ 160v in RGB o/p supply

plamensl 14-09-2004

Bush 2857NTX Low contrast & col R433 150k near LOPTx o/c

plamensl 14-09-2004

Bush 2857NTX Nicam popping X001 13.104Mhz Xtal faulty

plamensl 14-09-2004

Bush 2857NTX No pic - just grey raster, sound & OSG OK

R435 0R68 12v reg feed res gone hi res

plamensl 14-09-2004

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Found: 627

Bush 2857NTX No sound IC101 TDA3857 sound IF plamensl 14-09-2004

Bush 2857NTX No sound then shut down after short while

IC601 pin 29 low ident signal of 4v - should be 8v - C136 0µ02 leaky

plamensl 14-09-2004

Bush 2857NTX Poor pic - lacks crispness

R433 150k in beam lim hi res

plamensl 14-09-2004

Bush 2857NTX Poor reg - width varies with brill

C905 220µ 400v mains smoother

plamensl 14-09-2004

Bush 2857NTX Small pulsating raster C924 22mfd 250v HT smoothing cap o/c

plamensl 14-09-2004

Bush 2857NTX St/by only R125 2R2 12v feed to line osc o/c

plamensl 14-09-2004

Bush 2857NTX Sync crushing from cold

11.5v supply slightly low - R436 6R8 2w hi res

plamensl 14-09-2004

Bush 2857NTX Sync poor & cogging from cold

3.3mfd 50v in IF can plamensl 14-09-2004

Bush 2857NTX Sync poor when cold C127 3µ3 50v in IF can plamensl 14-09-2004

Bush 2857NTX Vert green line down lh side

D408 S529G plamensl 14-09-2004

Bush 2857NTX Weak contrast R433 150k o/c plamensl 14-09-2004

Bush 2857NTX Width, height & sound varies wildly

C926 22µ 160v high esr plamensl 14-09-2004

Bush 2857NTXA Dull pic R433 180k in beam lim plamensl 14-09-2004

Bush 2857NTXA High ht C910 47µ & C908 10µ plamensl 14-09-2004

Bush 2857NTXA Tuner drift because AFC link had been connected to tuner (not req) AFC volts goes to micro instead

plamensl 14-09-2004

Bush 285NS Blank raster with fb lines

R409 4.7 kOhm burnt; RC529 10 Ohm SMD fusible o/c; C416 680 pF 2kV leaky

plamensl 14-09-2004

Bush 2863NTX Field collapse 33v supply missing - R818 33k o/c

plamensl 14-09-2004

Bush 2863NTX Field collapse No ramp sig pin 42 of TDA8362. R818 22k 1w o/c

plamensl 14-09-2004




































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Bush 2863NTX int switches between mono & stereo

can be tuner low spec - ?40 CPC

plamensl 14-09-2004

Bush 2863NTX 11AK19 Dead - LOPTr s/c When replaced runs hot with bottom cogging - dry joint on link J613

plamensl 14-09-2004

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Repair tips



Found: 627

Bush 2863NTX 11AK19E3 Dead with HT of 16v - ok on dummy load

Supply to 5v reg missing - R867 0R33 o/c

plamensl 14-09-2004

Bush 2866NTX Blank raster only when tuning

R124 15k 1w o/c plamensl 14-09-2004

Bush 2866NTX Dead LOPTr Q602, C620 470nF 400v, C698 1000pF 2Kv, D105 BYD33J, I576 TDAFOP chip & R575 4k7 hi res

plamensl 14-09-2004

Bush 2866NTX Dead LOPTx, D577 s/c, R711 on e/w (4R7)

plamensl 14-09-2004

Bush 2866NTX Dead PSU elec caps, BUZ77, hi value r's

plamensl 14-09-2004

Bush 2866NTX Dead R103 47k 1w in PSU o/c plamensl 14-09-2004

Bush 2866NTX Dead - chopper tr s/c

R102 68k 2w & replace C106 33nF 630v, and C107 1Nf 2kv. As part of the fault, R101 2r2 5w was open circuit, For good measure, the following should also replaced c109 1uF 50v, C112 47uF, I101 TDA4605-3, R108 270k 2w, R109 680k 2w.

plamensl 14-09-2004

Bush 2866NTX Dead - LOPTr BU2508DF s/c

Line Drive Transistor (Q580) - Type "F422" - Fitted 2SC2271 was the cause even tho' checked ok

plamensl 14-09-2004

Bush 2866NTX Dead - LOPTr Q501 BU2508DF s/c

R604 3R3 2w on E/W panel overheating when LOPTr replaced - C596 0µ011 o/c

plamensl 14-09-2004

Bush 2866NTX Dead - mains fuse blown

chopper transistor (2SK 2545), LOPTr(BU2508DF), E-W driver (TDA8145), R618 (15k) R711 (3R3 0.5W fusible), C600 (1uf 250V electrolytic) all caused by C620 (0.47uf 250V) S correction cap going open circuit

plamensl 14-09-2004
































Bush 2866NTX Dead no st/by led R102 68k 1W; R109 680k 0.5W o/c in psu

plamensl 14-09-2004

Bush 2866NTX Dead with ticking sound

BY228 diode in E/W mod s/c & Q579 BD237 on subpanel next to LOPTx

plamensl 14-09-2004

Bush 2866NTX E/W faulty - R711 burnt out or overheating

R711 3R3 o/c, TDA8145 & L671 10mH s/c

plamensl 14-09-2004

Bush 2866NTX Int goes off aft 20 mins

Line dr trfmr int o/c - CHS Code ALB778 (same as Matsui 2196)

plamensl 14-09-2004

Bush 2866NTX Int sound & sw off Dry joints pins of connector on sound dec panel

plamensl 14-09-2004

Bush 2866NTX No E-W correction after blow up

E/W ic & 4R7 safety res plamensl 14-09-2004

Bush 2866NTX No pic - sound ok C620 470nF o/c plamensl 14-09-2004

Bush 2866NTX No sigs or tuning supply

R124 15k 1w o/c plamensl 14-09-2004

Bush 2866NTX No sound/pic - noise & OSD only

No tuning volts - R124 15k o/c (Front of main pcb)

plamensl 14-09-2004

Bush 2866NTX No sound/piv - HT correct but EHT only 8kv

C620 0µ47 250v tuning cap in LOP stage o/c

plamensl 14-09-2004

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Found: 627

Bush 2866NTX No tuning volts R129 15k 2w back of psu o/c feed to D114

plamensl 14-09-2004

Bush 2866NTX Pic jumps int/no or out of sync txt

No clock - SDA5243-5 EQ5243 &/or SAA5231 on txt/nicam pcb

plamensl 14-09-2004

Bush 2866NTX Resonating noise Chopper trfmr plamensl 14-09-2004

Bush 2866NTX Sound absent 5v supply to NICAM board low at 3v. Q581 BC537 faulty tho checked ok - used BC639 in lieu

plamensl 14-09-2004

Bush 2866NTX St/by only Replace the micro type CTV352/V1.4 (Amstrad pt no AM045101070211 )

plamensl 14-09-2004

Bush 2866NTX Tripping Lop tr s/c BUH515D - used S2055 also e-w mod diode - caused by dry joints hi volts tuning cap under pcb (under sticky pad)

plamensl 14-09-2004

Bush 2866NTX SM2 Txt missing Short pin 20 of IC301 the micro to earth then switch on. Service menu should appear Service- Telra V2.0; OP byte 1 OX OB; OP byte2 OX BO Init EEPROM. Use P+/P- tp select the line to adjust and V+/V- to adjust.Bytes 1 and two must be as shown above. To initialise the EEprom select the line and press V+/V- Correct handset reqd.

plamensl 14-09-2004

Bush 2866NTX/SM2 Blank white raster - sound ok

Jungle chip TDA8363AN3 plamensl 14-09-2004

Bush 2866NTX/SM2 Line tearing when heated

C597 (22nF 400V) completely open circuit.

plamensl 14-09-2004

Bush 2866NTX/SM2 To access tuning mode

press and hold [MENU] button for at least 5 sec. Then press and hold the white button for at least 5 sec to auto tune all the channels. Then use the green button to re-arrange the stored channels.

plamensl 14-09-2004



























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Bush 2866NTX/SM2 Won't store or loses chan store

This was cured by replacing memory 24C08

plamensl 14-09-2004

Bush 2867NTX Field collapse & no sound

No LT supply to jungle chip as R818 22k 2w o/c

plamensl 14-09-2004

Bush 2867NTX Field collapse with fb lines on top half

Dry joints at R818 (22kohm, 2W), R810

plamensl 14-09-2004

Bush 2867NTX Install menu & chan 1 posn locked

Reqs password - if the password is forgotten then use 734. This will allow you to unlock the channels. To open the install menu however you must unlock "all" the locked channels. If you find that you cannot enter the tuning menu one or more of the 100 channels is locked, so search through them all and make sure they are all unlocked.

plamensl 14-09-2004

Bush 2867NTX Locking codes faulty

EEPROM faulty plamensl 14-09-2004

Bush 2867NTX no sound check TDA1521A o/p chip & R811 4R7 also replace C365/366 1000µ. C374 470nf leaky in this case

plamensl 14-09-2004

Bush 2867NTX (11AK12) Dead - chopper tfmr failure

Replace T2.5A fuse, BUZ90 (used 2SK1643), R801 2R2 5W cement resistor, plus a 0.5R 1W metal oxide had gone o/cThe chopper transformer is obtained from CPC under part number AB4040905110 for ?5.08 + VAT and comes with a small mod kit (details below) . Transformer was a Teleson , now made by Eldor. R812 - change to 47R metal oxide, C809 - change to 220nF 63V MKT

plamensl 14-09-2004

Bush 2867NTX 11AK12 Dead with 150v present at LOPTr coll

No line dr - 12v supply low as D812 BYV27 leaky

plamensl 14-09-2004

Bush 2867NTX 11AK12 Dead with chopper trfmr s/c

Replacement trfmr comes as a kit pt no 30004541- also replace R812 47R 1w metal oxide & C809 220nF 63v

plamensl 14-09-2004

Bush 2867NTX 11AK12 Fluttery pic on certain scenes (after sm Tx replaced)

C608 10µ 350v plamensl 14-09-2004

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Found: 627

Bush 2867NTX 11AK19 Int off with smell of burning

dry joints chopper trfmr plamensl 14-09-2004

Bush 2867NTX 11AK19 No line drive R866 0R33 in series with 14v supply o/c (not shown on cct diag)

plamensl 14-09-2004

Bush 2867NTX 11AK19 Pic takes long time to appear - quicker if A1 adjusted

Check C608 10µ 250v reservoir cap for RGB stages by edge near LOPTx

plamensl 14-09-2004

Bush 2868 AK19 Tripping 200v line overloaded - TDA6107Q vid o/p chip on crt base

plamensl 14-09-2004

Bush 28688NTX Child Lock removal In Features menu make sure that Program & TV locks are OFF. From the features Menu select lock option. Put in Code 736 (or try 734) on every channel that's locked (Even if it's 100 channels!)

plamensl 14-09-2004

Bush 2868NTX aft scan coil plug burn up

L604 (should measure 2R7)

plamensl 14-09-2004

Bush 2868NTX Hum bar third way down screen

Reposition degaussing coils plamensl 14-09-2004

Bush 2868NTX Snowy raster, reduced width - won't access service mode, won't tune & locks up if pic menu entered

EEPROM replaced - part no. AB30001610 from CPC

plamensl 14-09-2004

Bush 2868NTX St/by only Faulty EEPROM was the cause

plamensl 14-09-2004

Bush 2868NTX 11AK08 Child Lock removal use default pin code 734. plamensl 14-09-2004
























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Bush 2868NTX 11AK12 Child Lock removal Dis pin 5 of EEPROM, sw set on, go to menu & set up any new pincode you like (do not forget to memorise it). While set is still on, re-connect pin 5 of EEPROM & press STORE on R/C. Now sw set off, resolder back the EEPROM and new pin is the one what you just entered.

plamensl 14-09-2004

Bush 2868NTX 11AK19 Child Lock removal go to the menu and toggle the child lock between on/off

plamensl 14-09-2004

Bush 2868NTX 11AK19 Dead R806 22k o/c also R825 2M2 o/c

plamensl 14-09-2004

Bush 2868NTX 11AK19 Dead with LOPTr s/c Check conns to scan coil plug - if overheated, wire directly

plamensl 14-09-2004

Bush 2868NTX 11AK19 E/W correction faulty Q683 FET BUK444 faulty plamensl 14-09-2004

Bush 2868NTX 11AK19 Entering service mode

Select "Install" then key in "4, 7, 2 & 5" via hset

plamensl 14-09-2004

Bush 2868NTX 11AK19 No pic - sound ok - pic will appear briefly when adj A1

C604 47nF 63V s/c in beam current

plamensl 14-09-2004

Bush 2868NTX 11AK19-5 E/W faulty C630 470nF plamensl 14-09-2004

Bush 2868NTX 11AK19-5 No tuning - pic settings wrong

Replace with blank eeprom & set up with hex code

plamensl 14-09-2004

Bush 2868NTX 11AK19-5 Txt absent apart from "100"

Replace multi micro/text chip SDA5255-A047 available from cHS

plamensl 14-09-2004

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Found: 627

Bush 2868NTX 11AK20 Child Lock removal press P+ and P- on front 5 times

plamensl 14-09-2004

Bush 286NTX Child lock removal - unable to tune any chan

Check all chans for white key symbol - if present no tuning will be possible; hold child lock button on r/c until symbol goes.

plamensl 14-09-2004

Bush 2871NTX Dead with 2.5A mains fuse F801 2.5A blown

Mains filter choke TR801 excessive warm - C804 220mfd 450v o/c

plamensl 14-09-2004

Bush 2871NTX 11AK19 Tripping Check diodes D814/5/6 on sec psu for s/c UF5402

plamensl 14-09-2004

Bush 2871NTX 11AK19 Tripping - LOPTr BU2508AF s/c

Caused by scan coil plug on pcb arcing internally

plamensl 14-09-2004

Bush 2871NTX 11AK19 Tuning only poss on low chans

C504 sm leaky plamensl 14-09-2004

Bush 2871NTX 11AK19 Width fault & no E-W developed into s/c LOPTr & FOP chip

coils L604, L602 , R629, C640 + LOPTr. FOP chip C629 0.43u & 2R7

plamensl 14-09-2004

Bush 2871NTX 11AK19 Width fault - coil L604 faulty - part no

part number 30002031 is available from SEME at 93p

plamensl 14-09-2004

Bush 2871NTX 11AK19-P4 No pic or OSD - sound present

TDA6108JF on the CRT base

plamensl 14-09-2004

Bush 2872NTX 11AK19 Dead with R806 22k start up res o/c

Due to short on pin 1 of MC44604 IC802 chopper chip

plamensl 14-09-2004

Bush 2872NTX 11AK19 Int width increase with E-W fault

Dry joint L602 plamensl 14-09-2004

Bush 2872NTX 11AK19 Tuning varies R505 tracking to pcb plamensl 14-09-2004

Bush 2872NTX 11AK19-E3 Dead R870n 0R22 in psu o/c due to C833 arcing against chopper Tr heatsink

plamensl 14-09-2004

Bush 2872NTX 11AK19ES Dead - LED flickers low green

No 5v supply as R867 0R33 o/c

plamensl 14-09-2004





























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Bush 2874NTX St/by only with 15v at coll of LOPTr

Removing EEPROM got set started & ok when refitted - R/C sensor on front panel faulty

plamensl 14-09-2004

Bush 2876NTX E-W faulty Dry joints L652 plamensl 14-09-2004

Bush 2876NTX 11AK12-9 No sound Dry joints P1303 plamensl 14-09-2004

Bush 2876NTX 11AK19E3 Blank raster with 2 blue, 2 green, then 2 red, thin horizontal lines, approx. one third down screen

R 704, 100R o/c. Supply to pin 6 of frame I/C TDA 8351 caused by bad joint on L602

plamensl 14-09-2004

Bush 2877NTX Dead with chopper tr s/c

Replace chopper Q802 MTP6N60E pt no 30001386 & D824 s/c pt no 30001319

plamensl 14-09-2004

Bush 2877NTX Remote cont int or not working

Dry joints PL502 ribbon cable on main pcb from front control pcb

plamensl 14-09-2004

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Found: 627

Bush 2879NTX No sound or picture , eht , heaters , anode , volts ok sound output working.

R406 was reading 26M because ZD422 12volt zener diode was shorted.

plamensl 14-09-2004

Bush 2890D Field collapse R704 100R, C702 100µ 63v & IC701 TDA8351

plamensl 14-09-2004

Bush 2890D Int width & E/W Dry joint T602 next to LOPTx

plamensl 14-09-2004

Bush 2890D St/by LED flashes green R879 4k7 hi res plamensl 14-09-2004

Bush 2897 No tuning above Chan 30

replace cap across 33v zener - goes leaky

plamensl 14-09-2004

Bush 28ZFK WST66 Dead set. TP2 (FET) Blown and also diode in bridge rectifier cct.

Fit new FET(I fitted a BUZ91 type instead of a P4NA80FI) and IN4007 diode in bridge cct

plamensl 14-09-2004

Bush 28ZKF Orion 4400 Dead with faulty on/off sw

Dry joints also LOPTr S2000AF s/c & LOPTx from SEME LOPTX1277 at ?18.95 Part S065621409

plamensl 14-09-2004

Bush 28ZKFWST66 Blank raster Check TP6 BD441 5v reg, dry joints chopper trfmr

plamensl 14-09-2004

Bush 2914 No chan store No 33v to memory chip IV02 - D405 s/c & 47R feed res o/c

plamensl 14-09-2004

Bush 2914 Red excess R919 680k in RGB o/p o/c

plamensl 14-09-2004

Bush 2914 Squealing from chopper tfmr - sound/pic ok

Check sync winding on lopt for wrongly fitted after loptx change

plamensl 14-09-2004

Bush 2920T no pic sound ok - blank raster

no line drive - secondary of line drive tfmr o/c (dirty pins)

plamensl 14-09-2004

Bush 3114 Dead HT pulses on & off when mains sw held in

IC401 TA8808N 64pin chip was faulty

plamensl 14-09-2004

Bush 3114A St/by only R502 330k o/c plamensl 14-09-2004

Bush 3463NTX 4400 No sound/pic - no 5v TP6 BD441 plamensl 14-09-2004






















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Bush 3472NTX St/by light blinks only LOPTr S2000A s/c & LOPTx insulation breakdown - CHS order code FBT40564

plamensl 14-09-2004

Bush 3472NTX 4400 No pic - blank raster TP6 BD441 in +5v supply

plamensl 14-09-2004

Bush 3472NTX Pro 4400 No pic or OSD - only blank raster

Check TP6 BD441 in 5v supply & DC4 1N4148 in BCL cct leaky between LOPTx & Scart. Check volts pin 22 TDA8843, (no higher than +3V) - > +3.6V then IC would disable RGB o/p to prevent crt burn.

plamensl 14-09-2004

Bush 6690 Vestec No vol/chan change or menu functions in analogue functions. Digi tuner works OK

Reset remote handset by pressing Left/Right/ Down cursor keys & No 1 button together and holding for 5 secs. Note if fault does not clear suspect micro IC.

plamensl 14-09-2004

Bush 6690D (IDTV) No vol/menu/chan change in normal mode

reset remote unit by pressing left , right, down[cursor keys]and the number one key at the same time for 5 seconds then release.[should this fail to resolve problems similar to above then micro suspect]

plamensl 14-09-2004

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Repair tips



Found: 627

Bush 6690D 11AK19 No pic except for line across top of pic - sound ok

rest of screen blank unless A1 advanced - RGB O/P IC

plamensl 14-09-2004

Bush A816 Dead 3R86 ( 150ohm ) o/c plamensl 14-09-2004

Bush A816 Frame - Fold over & reduced height.

Check 3VT13 ( BC287 ) plamensl 14-09-2004

Bush A816 No sound or picture. 3R86 ( 150ohm ) o/c. plamensl 14-09-2004

Bush A816 Reduced height & foldover.

3VT13 ( BC287 ) plamensl 14-09-2004

Bush A823 Frame - linearity poor - drifts.

5C35 ( 250PUT ) plamensl 14-09-2004

Bush A823 Frame Line Varies After Set Is Warmed Up

Check 5C35 plamensl 14-09-2004

Bush A823 Sound - buzz/crack when warmed up.

3C2 , 3C17 ( 50uf ) plamensl 14-09-2004

Bush A823A AFC Problems 1VT5 plamensl 14-09-2004

Bush A823A No or Intermittent sound.

Dry joint on 1Z7. plamensl 14-09-2004

Bush A823AV Int on channel change. 3C2 , 3C17 ( 50uf ) . plamensl 14-09-2004

Bush A823AV Tuning - AFC. 1VT5. plamensl 14-09-2004

Bush BC6004 Blowing line o/p transistor

D687 ( SKE4F1/10 ) , D688 ( BY223 ) , C688 ( 0.0013uf ) , R941 ( 100k )

plamensl 14-09-2004

Bush BC6004 Dead BU326A T686 s/c, when replaced has slow tripping - tripler faulty

plamensl 14-09-2004

Bush BC6004 Tripping D687 ( SKE4F1 ) Faulty Blows Up C835/6 If Left Tripping .

plamensl 14-09-2004

Bush BC6004 Tripping - as Picture Comes On

Adjust P943 For 122v at R886.

plamensl 14-09-2004

Bush BC6004 Tripping - as Picture Comes On

Check/Replace D956 ( sync/control PCB )

plamensl 14-09-2004

Bush BC6004 Tripping - intermittently.

R943 ( 330k ) gone high.

plamensl 14-09-2004

Bush BC6111 Tuning drift. Check/replace 9Z1 plamensl 14-09-2004





















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Bush BC6318 No or intermittent sound.

Dry joint from 1Z7. plamensl 14-09-2004

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Found: 627

Bush BC6338 Channel selector stuck on prog.

ET6016 , 1R1106. plamensl 14-09-2004

Bush BC6338 Tuning - no channel change.

ET6016 &/or 1R1106 plamensl 14-09-2004

Bush BC6348 Dead 4D14 plamensl 14-09-2004

Bush BM6514 Ranger 2 Hum bar & picture distorted.

2x Diodes on right hand side from back ( BY133 type )

plamensl 14-09-2004

Bush BTV14 Completely dead Q603 BC548C in psu plamensl 14-09-2004

Bush BTV14 Tripping Dis pin 2 on conn on vcr panel from psu, if stops replace IC661 5v reg

plamensl 14-09-2004

Bush BTV17 No functs - micro locks up

Mod kit from Alba pt no BTV17 - contains small panel with EEPROM - available from CHS

plamensl 14-09-2004

Bush BTV17 No sound thro tuner - ok on pback

Reprog EEPROM - details in vault also EEPROM kit available from SEME for ?8

plamensl 14-09-2004

Bush BTV17 No sound, no chan store, reverts to st/by aft 20 mins

Eeprom reqs reprog plamensl 14-09-2004

Bush BTV17 Pin code removal Enter any code 3 times until "protected" is displayed, now press 'Vol-' on TV and '7' on R/C

plamensl 14-09-2004

Bush BTV17 St/by only Mod kit BTV17MODKIT consisting of small plug in module reqd

plamensl 14-09-2004

Bush BTV17 St/by only Mod kit pt no BTV17MODKIT consisting of small plug in pcb with instructs usually cures it

plamensl 14-09-2004

Bush BTV170T No TV sound - Pback sound ok also no Txt

Change data in NVM - address 0D to B3 for sound; address 08 = 44, 09 = 61 for txt

plamensl 14-09-2004

Bush BTV170T No Txt Reqs reprog - Bush will FAX sheet thro'

plamensl 14-09-2004
























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Bush CC6323A T20A Width - lack of width.

IC TBA950 , 4R69 ( 82k ) , 5L1 ( EW load coil s/c ) , 5C15 ( 1uf ) , D6 , D7

plamensl 14-09-2004

Bush CTV100 Int dead check for slack fuse holders plamensl 14-09-2004

Bush CTV1400 Dead ZD401 12v zener leaky, R414 12R 2w o/c, C909 47µ low, C408 2200µ 25v bulging, LOPTr 2SD1544 s/c, Chopper tr 2SD1431 s/c - used BU508A in lieu, R902 2R2 o/c, R919 0R68 o/c, Q902 2SB774 o/c, C910 10µ 50v bulging

plamensl 14-09-2004

Bush CTV1400 Field collapse after pic restored

AN5521 field chip plamensl 14-09-2004

Bush CTV1400 int pic & sound - goes off tune

tuning volts perm 30v - Q103 emitter should be 0v - was higher due to crack in print next to tuner

plamensl 14-09-2004

Bush CTV1400 Small pic - low HT (80v)

R918 0R68 1w hi resistance

plamensl 14-09-2004

page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32






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Found: 627

Bush CTV3408 Blank raster & no sound

Dry joints VRP1 5v reg on central heatsink close to mains fuse

plamensl 14-09-2004

Bush CTV855 Dead - int. Dry joints on line coil & LOPTX.

plamensl 14-09-2004

Bush IDTV Service mode 1.Go to standard (analogue) mode. 2.Press "Function" on R/C (under the blue button) 3.Go to INSTALLATION 4.Enter 4,7,2,5.

plamensl 14-09-2004

Bush ITV2100 Sound int goes with crackle aft 1/2 hr

Although freezing O/P IC TDA7263 temporary cure - 18Mhz Xtal was faulty

plamensl 14-09-2004

Bush ITV2101 R/C not working Needs initiallising - Hold left, down, right & 1 buttons together

plamensl 14-09-2004

Bush ITV8401 11AK20S St/by only - r/c not operating tv

Initialise remote by pressing arrow L, arrow R & arrow Down as well as "1" at the same time

plamensl 14-09-2004

Bush MC6341B T22A East west - will not ajust.

D6 & D7 ( BYX71 ) s/c on line board right hand side.

plamensl 14-09-2004

Bush Onwa 1407 Int osg appears, vol turns up on its own, tuning, R/C etc

D602 1N4148 plamensl 14-09-2004

Bush Onwa 2059NTX Pic size varies with brightness after psu repair

Check 0R68 resistors for rise in value

plamensl 14-09-2004

Bush Onwa 2857NTX No st/by aft psu repair - pic goes dark & sound mutes

Q201 st/by tr - used BUT56A in lieu

plamensl 14-09-2004

Bush Ranger T16A Dead - int. BU407 ( int ) , o/c C40. plamensl 14-09-2004

Bush Saba Dead. D687 ( SKE4F1/10 ) s/c. plamensl 14-09-2004

Bush Ssangyong etc. DEAD ZD401 12v ZENER SC R414 12R 2W OC LOP TR SC

CHECK HT SHOULD BE 114v CHECK ALL POWER SUPPLY CAPACITORS , ZENERS AND SOLDERING

plamensl 14-09-2004

Bush SWS6671 Dead with ticking LOPTr BU2508AF s/c & C626 dry joints

plamensl 14-09-2004























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Bush T20 Dead. Collector of 12v reg 4VT7 ( 2N5296 ) going o/c.

plamensl 14-09-2004

Bush T20 East west & exceeive width.

5L2 EW loading coil s/c turns.

plamensl 14-09-2004

Bush T20 East west. 4VT13 ( BC148C ) o/c. plamensl 14-09-2004

Bush T20 Flyback lines & overbright picture.

3RV13 ( black level ) , 3R76 ( 1.2k )

plamensl 14-09-2004

Bush T20 Focus - defocused. R42 ( 2.2M ? ) plamensl 14-09-2004

Bush T20 Focus - poor. Tube base socket. plamensl 14-09-2004

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Found: 627

Bush T20 Frame - int Dy on pin 12 of plug 4Z2. plamensl 14-09-2004

Bush T20 Frame - int field collapse.

Dry joint on pin 12 of plug 4Z2.

plamensl 14-09-2004

Bush T20 Frame - reduced. 4VT8 , 4VT10. plamensl 14-09-2004

Bush T20 Frame - reduced. Noisy height control. plamensl 14-09-2004

Bush T20 Frame collapse. 4R9 o/c , 4R4 ( 1k ) high due to poor contact of frame Tx's

plamensl 14-09-2004

Bush T20 Frame collapse. 4VT1 , 4VT2 plamensl 14-09-2004

Bush T20 Height almost double. 4RV5 plamensl 14-09-2004

Bush T20 Height reduced Check 4VT8 , 4VT10 & height control.

plamensl 14-09-2004

Bush T20 Int colour. Check connections 4C24. plamensl 14-09-2004

Bush T20 Line O/P stage dead. 5R8 o/c. plamensl 14-09-2004

Bush T20 No colour - with top shaded.

3D1 ( BA317 ) s/c. plamensl 14-09-2004

Bush T20 No line. 5R8 o/c. plamensl 14-09-2004

Bush T20 No raster - sound Ok. 4VT3 , 4VT4. plamensl 14-09-2004

Bush T20 No sound IC TBA1205B. plamensl 14-09-2004

Bush T20 Picture pulsating. 7C5 ( 47uf ) but checks ok.

plamensl 14-09-2004

Bush T20 Reduced width. 5L1 , 5C15 1u f s/c ) , 4R69 ( 82k )

plamensl 14-09-2004

Bush T20 Shutdown - switching off after second or so.

Tripler. plamensl 14-09-2004

Bush T20 Startup - int when cold.

5D5 ( 1N4148 ) on trip sub PCB s/c.

plamensl 14-09-2004

Bush T20 Tripler - blowing. Check 5R13 ( 330k ) plamensl 14-09-2004

Bush T20 Tripping - at switch on.

Check 7R11 ( 220 ) for o/c.

plamensl 14-09-2004

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Found: 627

Bush T20 Tripping - intermittent tripping.

Check 5RV1 , 5D1 , 5R13 , 5D2.

plamensl 14-09-2004

Bush T20 Tripping - random tripping.

5R13 ( 330R ) o/c , 5RV1 , 5D1 , 5D2

plamensl 14-09-2004

Bush T20 Tripping. 7R11 ( 220R ) o/c plamensl 14-09-2004

Bush T20 Whistle. Dry joints on connector Z1.

plamensl 14-09-2004

Bush T20 Width excessive & poor EW.

S/C turns in 5L2. plamensl 14-09-2004

Bush T20/22 Remote - hand set faulty.

See Tv mag. plamensl 14-09-2004

Bush T20A Dead. 4D14. plamensl 14-09-2004

Bush T20A Frame - no frame. 4VT1 , 4VT2 plamensl 14-09-2004

Bush T22 Dead - blowing BU208. Dry joint on line drive TX 5T1 pin 3.

plamensl 14-09-2004

Bush T22 Dead. 1uf , BU208 , 5R3 ( 1r8 ) o/c connection at 472/2

plamensl 14-09-2004

Bush T22 Dead. 5R3 ( 1r8 ) , check PL472/2.

plamensl 14-09-2004

Bush T22 Flashing red lines on green areas.

Replace C83/4/5/6 , check R103 , last align filter L9.

plamensl 14-09-2004

Bush T22 Sound - distorted - no EHT.

LOP transistor part s/c. plamensl 14-09-2004

Bush T22 Startup - no startup. R16 ( 1k ) o/c. plamensl 14-09-2004

Bush T24 Contrast - dark picture. TR203 ( BC557 ) may check ok.

plamensl 14-09-2004

Bush T24 No colour R229 ( 3k6 ) go's high. plamensl 14-09-2004

Bush T24 Shutdown - int. R476 ( 1M ) o/c. plamensl 14-09-2004

Bush T24 Shutdown - standby. Zener D472 ( BZX79B6V2 ) leaky.

plamensl 14-09-2004

Bush T24 Teletext - interference. C313 ( 4.7uf ) o/c. plamensl 14-09-2004

Bush T24E Dead. FS803 ( 3 15 ) , TR801 , D801-4 T801.

plamensl 14-09-2004

page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32


























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Found: 627

Bush T26A Dead - inter ttent.

BU208A , 5D12 ( BY228 ) plamensl 14-09-2004

Bush T26A No raster. D12 o/c. plamensl 14-09-2004

Bush T26A Sound - no sound or raster.

D10/11 o/c , D12 s/c. plamensl 14-09-2004

Bush T26A Tripping - int. 7THY2 , 7D12/13 leaky or 7C5 ( 47uf )

plamensl 14-09-2004

Bush TV2866 Tuning not possible

Replace R124 15K 2W plamensl 14-09-2004

Bush TV311 Frame - height reduced & foldover.

3VT13 , ( BC287 ) plamensl 14-09-2004

Bush TV311 No sound or picture.

3R86 ( 150ohm ) O/C. plamensl 14-09-2004

Bush TV350 Negative picture.

Pulse winding o/c ( LOPTX ) plamensl 14-09-2004

Bush TV8 Dead aft smoking

PCB track between C307 & scan coil plug burnt. BUH515D loptr T308 s/c; TDA8170 fop chip IC401 duff; R408 0R22 in supply to it o/c

plamensl 14-09-2004

Bush WS6667 Dead - LOPTr s/c - blew again when replaced

LOPTx was cause even though it checks ok

plamensl 14-09-2004

Bush WS6671 Dead with LOPTr s/c - blows when replaced

Replace Q604 BC639 line driver & LOPTr with BU2525AF

plamensl 14-09-2004

Bush WS6671 E-W problems 2R7 feed res o/c caused by dry joint or o/c C630 390nF 250v

plamensl 14-09-2004

Bush WS6671 int destroyed the TEA6107A RGB drive chip on Crt tube base panel

arcing CRT socket, the discharge was from the focus anode to ground ring across the spark-gap

plamensl 14-09-2004

Bush WS6671 Small pic C630 & R629 27R, also VR601 330R 5w pt no 30001151

plamensl 14-09-2004

























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Bush WS6671 Striations Mod reqd - replace link J500 with 10µH choke (between Q603 & SCART) pt no BUSH608000000021

plamensl 14-09-2004

Bush WS6671 11AK19 3 RGB test lines only showing

FOP chip TDA8351 & check for dry joints

plamensl 14-09-2004

Bush WS6671 11AK19 Dead - no LED display

Replace Q802 BUZ91A ( MTP6N60 ) & D823 ( BA157)

plamensl 14-09-2004

Bush WS6671 11AK19 Lack of width & R629 (2.7ohm) in EW circuit o/c

C630 (560nf) - read OK plamensl 14-09-2004

Bush WS6671 11AK19P4 Narrow pic Dry joint/ o/c C630 560n; R629 27R? Safety o/c, L604 reads 3R (correct), Q603 PHF9NQ20T replaced - used BUK444 200A in lieu

plamensl 14-09-2004

Bush WS6671 11AK19P4 Narrow pic R629(2R7 1/3 watt fusible) plus DJ on C630.

plamensl 14-09-2004

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Found: 627

Bush WS6671 11AK19P4 Width excessive Q603 (9NQ20T or BUK444-200 or MTP6N60E)

plamensl 14-09-2004

Bush WS6672 Blank white raster with fback lines aft replacing LOPTr

No 220v to RGB as RD12 15R on main pcb to left of LOPTx o/c due to previous dry joint on scan coils had blown LOPTr

plamensl 14-09-2004

Bush WS6672 Dead & tripping LOPTr BU508SAF s/c & CD08 560nF 250v o/c in E/W mod

plamensl 14-09-2004

Bush WS6672 Dead with burning smell

Mains sw burnt - can use Wharfedale sw pt no MS32 from CHS

plamensl 14-09-2004

Bush WS6672 E/W burn up RV38 22R o/c & BY228 E/W Diode s/c

plamensl 14-09-2004

Bush WS6673 11AK19P5 Dead - check for dry joints

Also replaced LOPTr which then produced 1" line scan - D622 BY228 leaky & R629 2R7 o/c. There's a mod for psu (11DYC19P) to fit heatsink for diode that burns up

plamensl 14-09-2004

Bush WS6673 11AK19P5 Dead - D823 blown (not shown on cct)

When replaced still faulty, IC802 MC44604P chopper chip u/s - also check FET chopper Tr

plamensl 14-09-2004

Bush WS6673 11AK37 Width excessive C622 12nF 350v s/c plamensl 14-09-2004

Bush WS6673SIL Trips with LOPTr 2SD2579 s/c

Check dry joints C626 flyback cap & measure its value 12nF 2kv

plamensl 14-09-2004

Bush WS6674 Tuning absent - no tuning volts

RP19 15k 1w o/c plamensl 14-09-2004

Bush WS6674 PT92 Dead - no o/p from psu or LED

RP06 3M9 1/4w pin 11 chopper IC o/c

plamensl 14-09-2004

Bush WS7671 No pic(blank raster when A1 advanced) - sound ok

TDA6107Q faulty (used TDA6108 in lieu)

plamensl 14-09-2004





























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Bush WS7671 11AK19P4 Dead - off with a bang

IC802 MC44604P, IC801 CQY80NG CNX82 OR SEME TYPE OPT403 OPTOCOUPLER, Q802 2SK2545 MTP6N60E, R822 22K 3W, D807 RL207 BA159, D826 BA159, D827 BA159, D824 MR852 BYW98/200V

plamensl 14-09-2004

Bush WS7673 E/W faulty Dry joints C630 caused R629 44R to go o/c

plamensl 14-09-2004

Bush WS7673SIL Dead D002 dry joints, chopper FET s/c, L801 o/c

plamensl 14-09-2004

Bush WST Professional 4400 series Service Mode access

hold menu button while turning CTV on until the red LED lights up. Release the menu button and press standby.

plamensl 14-09-2004

Bush WST66 Dead - LOPTr S2000AF-1 s/c

When replaced, loud crack & went the same way as predecessor - LOPTx arcing thro pinhole

plamensl 14-09-2004

Bush WST66 28ZKF Trips once then dead - LOPTr S2000AF1 s/c

LOPTx cause - FAT30564 ?19.38 SEME

plamensl 14-09-2004

Bush WST66 4400 Dead - LEDs ok & EHT rustle

No 5v supply pin 39 & 44 of ICR1 & TP6 - BD441 faulty

plamensl 14-09-2004

Bush WST66W/S Int start up; blank screen; no R/C operation

TP6 BD441 in st/by 5v supply - check heatsink clip secure

plamensl 14-09-2004

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Repair tips



Found: 627

Bush Z718 Channel selector stuck on prog.

ET6016 , 1R1106. plamensl 14-09-2004

Bush Z718 East west - poor & bent verticals.

4VT16. plamensl 14-09-2004

Bush Z718 LOPTX keeps going.

5C3 ( 0u 01f ) plamensl 14-09-2004

Bush Z718 No signals on log.r channels.

ET6016 plamensl 14-09-2004

Bush Z718 Tuning - drift. 9Z1.6 plamensl 14-09-2004

Bush etc 11AK19 Dead - no st/by led

IC 801 opto-isolator.(CQY80NG) plamensl 14-09-2004

Bush, Alba, etc 11AK19 blank raster with red green blue flyback lines at the top of pic

replace R 704 (marked R702 on cct) 100R in frame output stage.

plamensl 14-09-2004

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