Panasonic TX-32CS510

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  • unimatrix93
    Badcaps Veteran
    • Oct 2021
    • 338
    • MagyarorszΓ‘g

    #1

    Panasonic TX-32CS510

    Hello everyone, I would like to ask some help repairing this Panasonic TV.

    The symptoms are the following:

    TV turns on, power LED turns green. The display shows a faint screen with very dim backlight, then turns black, power LED starts flashing red indefinetly.

    The PSU outputs two voltages: 5.5V and 16V

    Click image for larger version

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    Click image for larger version

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    5.5V is present, while 16v is not on the output pin.

    I started looking for for short, not found any.
    Damaged components like capactirs or diodes, did not find any either.

    So I started measuring around the board, tracking back the missing 16v.
    Click image for larger version

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    As you can see, the NCP1234 has the High voltage input, but nothing on the drive output.

    The Mosfets has voltages on the source and gate, but nothing on the drain.

    I managed to find the schematics of the TV, I started examining it but I'm pretty new to these SMPS PSUs.

    Can you please point me the right direction and help me repair this board?
    I couldn't find any cheap ones either to just replace, also I would like to learn repair these kind of circuits too.

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