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2012 LED Auto Power Cycling/Reset Issue

Symptom:

- The TV sometimes displays vertical lines on the screen (Images 1 through 3), and then will Power OFF and ON by itself

OR

- When accessing the Wi-Fi operation either via the network setup/status or through SMARTHUB, the TV will lock up or Power OFF and ON by itself.

Troubleshooting and Service:

First, check the software version. Make sure the TV has the latest version available. (Refer to GSPN.)

Next, check the error codes in the service menu as this issue can be caused by any of the following three issues:

If the WD Count (Service Menu>Control>Sub Option) is higher than 0 Check the connector on the SMPS and SMPS cabling. (Refer to Image 4 on page 2.) If either connector is discolored, replace the SMPS and the cable between the SMPS and main board. Check closely. The discoloration may be very minor. Image 4 shows an extreme case.

Next, check the T-Con board connector lot number. (Refer to Image 5 on page 2.) If the first 6 digits of the lot number are lower than 120531, replace both the LVDS cable and T-Con board.

Finally, check the AR (Service Menu>Control>Sub Option) and Wi-Fi (Service Menu>SVC) error count. If both are higher than 0 or if the Wireless Mac address displays Failure (refer to Image 6 on page 2) in the service menu, replace the Wi-Fi module.

Image 1 Image 2 Image 3

SERVICE BULLETIN

PRODUCT: LED TV

BULLETIN NUMBER: ASC20130429001_V4

BULLETIN DATE: 07/11/2013

MODELS:

UN46ES7500, UN55ES7500

UN60ES7500, UN46ES7550

UN55ES7550, UN60ES7550

UN46ES8000, UN55ES8000

UN60ES8000, UN65ES8000

UN75ES9000

Discoloration

Image 4

Image 5

Image 6

SERVICE BULLETIN

BULLETIN NUMBER: ASC20130429001_V4

Discoloration on pins 17 and 19

2

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