Philips 40PFL1708/F7 No Power Dead

This TV had no power and had the same power supply as an Emerson TV I repaired here. Board is marked BA3AT0F0102 2. The main fuse was not blown and the main switching FET was not shorted. Checking the diodes, I found D653 shorted (SB3A0, 100V, 3A). Replacing this part got the TV working.

However, I found that once the TV was turned off, it would not turn on again without unplugging the TV for a few minutes. The main board uses a processor associated with EEPROM failures in low end models. I wasn’t able to read the EEPROM part number but suspected it could be Winbond W25Q64B which is a common failure. I was able to read it and reprogram into another IC. Once installed, it fixed the turn on problem.

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