Introducing the Introducing the HA325HA325 Horizontal Output and Flyback Tester: Horizontal Output and Flyback Tester:

A handheld, battery-A handheld, battery-operated Analyzer that operated Analyzer that isolates horizontal isolates horizontal defects in video displays - defects in video displays - at the job site or on the at the job site or on the bench.bench.

250 million CRT-based video displays are estimated in use today - not including PC monitors.

Sales of CRT-based video displays exceed 22 million annually.

Over 1 million High Definition sets will be sold this year.

Projection systems & large displays require on-site service & repair.

Strong sales of new high-resolution Strong sales of new high-resolution video displays & a large base of video displays & a large base of existing units means profitable existing units means profitable servicing opportunities:servicing opportunities:

Technicians indicate more than 50% of CRTTechnicians indicate more than 50% of CRTdisplay failures are horizontal related.display failures are horizontal related.

* Horizontal problems cause confusing interaction with other circuits.

* Output stage defects cause high currents that stress or quickly burn-out costly components.

* Many loading problems caused by defective components cannot be detected with an ohmmeter.

* Shutdown conditions result in momentary operation, leaving no time

to make measurements.

Why?Why?

1. Horizontal Output Load Test:1. Horizontal Output Load Test: Identifies horizontal output stage defects

quickly & accurately in any CRT-based SDTV, EDTV, HDTV or computer monitor. Bench-proven in over 5,000 service centers.

2. Flyback & IHVT Load Test2. Flyback & IHVT Load Test Analyzes flybacks and IHVTs for internal

defects.

3. Ringer Tests3. Ringer Tests Identifies shorted turns in flybacks, yokes,

switching transformers or other coils.

4. Assistance Messages4. Assistance Messages Help messages guide you and simplify

troubleshooting.

5. Handheld & Battery OperatedHandheld & Battery Operated Use in the home, field, or on the bench.

Overview of the HA325’s Features:Overview of the HA325’s Features:

Horizontal Output Load Horizontal Output Load TestTestFunctionally tests horizontal output stages to Functionally tests horizontal output stages to detect loading & defects that do not permit detect loading & defects that do not permit power-on testing.power-on testing.

Benefits:- Identify horizontal output

stage defects before replacing & burning out replacement parts.

- Quickly determine if horizontal output stage defects exist before applying AC voltage.

- Determine if the horizontal output stage is the cause of power supply defects or improper operation.

HA325 Feature #1:HA325 Feature #1:

1. The Load Test 1. The Load Test requiresrequires

3 connections.3 connections.

NOTE: The load test is performed with

NO AC power applied to the chassis.

HA325 Feature #1:HA325 Feature #1:

2. The Load Test setup2. The Load Test setupis easy.is easy.

Simply select the setup option that matches the display’s normal operating horizontal frequency:

AUTO (HA325 automatically detects best setup)

TV 16 kHz (conventional televisions)

HD1080 33 kHz (HDTV with 1080 resolution)

HD720 45 kHz (HDTV with 720 resolution)

VESA 38 kHz (computer monitor)

VESA 48 kHz (computer monitor)

VESA 64 kHz (computer monitor)

VESA 75 kHz (computer monitor)

VESA 88 kHz (computer monitor)

MANUAL

3. Perform the Load 3. Perform the Load test.test.

The HA325 displays 3 test results: mA (B+ current), % EFF (output stage efficiency), and µS (retrace pulse time).

Good readings indicate no severe loading or timing defect in the horizontal output stage.

Use the bad readings to help pinpoint the defect.

NOTE: The load test is performed

with NO AC power applied to the chassis.

HA325 Feature #1:HA325 Feature #1:

Integrated High Voltage transformers (IHVTs) Integrated High Voltage transformers (IHVTs) havehave

many failure modes that affect chassis many failure modes that affect chassis operation.operation.

HA325 Feature #2:HA325 Feature #2:

Flyback and IHVT Load TestFlyback and IHVT Load TestAnalyzes flybacks for: open primary, shorted Analyzes flybacks for: open primary, shorted adjacent turns, and shorts/leakage from the adjacent turns, and shorts/leakage from the primary to a secondary winding ground.primary to a secondary winding ground.

Benefits:- Verify if the flyback or IHVT is

defective when the Horizontal Output Load Test indicates a severe output stage defect.

- Confirm IHVT defects before replacing expensive component.

- Isolate AC Loading defects to primary components or to flyback & secondary circuit loads.

1. The Flyback & IHVT1. The Flyback & IHVTLoad Test requires Load Test requires 3 connections.3 connections.

HA325 Feature #2:HA325 Feature #2:

2. The Flyback & IHVT Load Test2. The Flyback & IHVT Load Testsetup is easy.setup is easy.

Simply select a setup option that matches the flyback/IHVT’s operation:

AUTO (HA325 automatically detects best setup)

TV (conventional televisions)

Hi-Scan (HDTVs, computer monitors & high-res.

Displays>30kHz)

MANUAL

3. Perform the 3. Perform the Flyback/IHVTFlyback/IHVT

Load test.Load test.The HA325 displays 3 test results: mA (primary current), % EFF (transformer efficiency), and µS (induced pulse time).

Good readings indicate a good primary winding, no shorted turns, & no primary-to-secondary leakage.

Use the bad readings to help pinpoint the defect.

HA325 Feature #2:HA325 Feature #2:

Use the Flyback/IHVT Load test to check IHVT Use the Flyback/IHVT Load test to check IHVT multipliers, and screen & focus dividers.multipliers, and screen & focus dividers.

Multiply measured voltage x100 for actual in-circuit output voltage from the IHVT.

Lower than expected voltage, or an output that cannot be varied through the proper range indicates a defect.

HA325 Feature #2:HA325 Feature #2:

HA325 Feature #3:HA325 Feature #3:

Ringer TestRinger Test Analyzes flybacks & IHVT Analyzes flybacks & IHVT transformers, yokes, transformers, yokes, switching transformers and switching transformers and other coils for shorted other coils for shorted adjacent turns.adjacent turns.

Benefits:- Locate shorted turns that

cannot be detected with an ohmmeter or with inductance value checks.

- Confirm IHVT defects before replacing expensive components.

1. The Ringer Test 1. The Ringer Test requiresrequires

connections to the connections to the yoke, flyback/IHVT, yoke, flyback/IHVT, switching switching transformer, or coil.transformer, or coil.

Yokes - typically blue and red wiresFlybacks & IHVTs - primary windingSMPS transformers - primary winding

HA325 Feature #3:HA325 Feature #3:

2. The Ringer Test setup is 2. The Ringer Test setup is easy.easy.Apply the ringer test that matches the component that you are testing. Push and hold the appropriate Ringer Test button:

Yokes & Flybacks (deflection yokes, flybacks &

the flyback portion of IHVTs. Coils (coils & inductors used in horizontal or other

electronic stages)

Switching Transformer (transformers used in

switching mode power supplies)

3. Perform the Ringer 3. Perform the Ringer test.test.

The HA325 displays a ring value in the digital display.

Good readings of 10 or more rings means the coil has no shorted turns.

A reading less than 10 rings indicates a shorted turn.

Zero rings indicates a possible open winding or very low Q (quality) yoke coil with a shorted turn.

HA325 Feature #3:HA325 Feature #3:

Instant help messages guide you to the fault and show Instant help messages guide you to the fault and show you what parts to test. Press the ASSISTANCE button you what parts to test. Press the ASSISTANCE button anytime to access the help displays.anytime to access the help displays.

Benefits:

- Display the proper button to push to make a measurement

- Determine if the test conditions are proper

- Determine if the test results are good or bad

- Advice on what to check next

Assistance Assistance MessagesMessages

HA325 Feature #4:HA325 Feature #4:

Hand-held and Hand-held and

battery battery operatedoperated

Measuring just 2” x 5” x 11” & weighing approximately 2 lbs. the HA325 is ready to go where ever you need it.

HA325 Feature #5:HA325 Feature #5:

HA325 HA325 AccessoriesAccessories

HA325 Key SpecificationsHA325 Key SpecificationsHORIZ. OUTPUT LOAD TEST SETUP

Frequency Range: 15-125kHz (.5kHz increments)VDC Range: 0-18VDC +/- .2 volts (.1V increments)VPP Range: auto-ranged 0 - 300 VPP, 1 volt Resolution

HORIZ. OUTPUT LOAD TEST DC mA Range: 0 - 200 mA (1mA resolution)uS Range: .1 uS - 40 uS (resolution .1uS) Efficiency Range: 0 - 99 % (1% resolution)Protection: Diode & Fuse, 400 volts (DC + Peak)

SETUP OPTIONS: (FLYBACK & IHVT) Presets: AUTO (automatic setup), TV, HI-SCANManual setup: adjustable 15-40kHz from 20 kHz, VDC = 1V

SETUP OPTIONS (HORIZ. OUTPUT): Presets: AUTO (automatic setup), TV, HD1080, HD720, VESA 38 kHz, VESA 48 kHz, VESA 64kHz, VESA 75kHz, VESA 88 kHzManual setup: adjustable. from 30 kHz, 1V)

RINGER TEST Range: > 10 uH, non-iron coreSensitivity Level: Yokes & Flybacks 25%, Coils and Switching X-formers 5%

GENERAL Case Size: 2” X 5” X 11” Display: LCD 20 X 5Weight: <2 lbs.Battery life: approximately 3.5 hours with included 6-AA NiMh 7.2V 4500 AHRecharge time: 4 hours with supplied PA273 AC Power adapter (14V, 700mA)

HA325 HA325 Benefits:Benefits:** Quickly indicates if a defect exists & guides you to the defect Quickly indicates if a defect exists & guides you to the defect

** More 1st time completesMore 1st time completes (fewer trips back to job site)

* * Reduces transports back to the shopReduces transports back to the shop (less cabinet damage, less labor)

** Faster diagnoses at the job siteFaster diagnoses at the job site (improved technician efficiency)

** No unnecessary parts replacementsNo unnecessary parts replacements (reduced costs)

** Greater customer satisfaction!Greater customer satisfaction!

More questions about the HA325More questions about the HA325

Horizontal Output & Flyback Horizontal Output & Flyback Analyzer?Analyzer?

contact Sencore atcontact Sencore at

800-736-2673800-736-2673ororsales@sencore.comsales@sencore.com