Philips 50PF7321/10 no image or sound

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  • karsavuran
    New Member
    • Jun 2020
    • 2
    • Turkey
    #1

    Philips 50PF7321/10 no image or sound

    Hi all, greetings from Turkey.

    I have an old Philips 50PF7321/10 and it stopped working.

    When I plug in I hear two relay clicks and after a few seconds I hear another one. Green light is on but no image or sound.

    I tried few things, here are the results:
    I dissconnect connectors of the X-Main and Y-Main boards from the PSU board and measured the voltages. All are OK. (I can post the readings if you want)
    When I connect them problem starts. Many voltages are missing or wrong and the led (LED8001) blinks 5 times. Alarm codes on the boards says Vscan for 5 but it was OK when X and Y boards was removed.
    When I connect them one by one the led stays steady but no image.

    The PSU board was completely replaced some time ago by the previous owner.

    I could not understand if the problem is on the PSU board or X or Y boards.
    Could you help me to find out the problem?
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