Panasonic TH-42PWD4 Red image and No signa

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  • reaper57
    Badcaps Veteran
    • Sep 2014
    • 216
    • Norway

    #1

    Panasonic TH-42PWD4 Red image and No signa

    Hi! I have another plasma I need help with. This one is actually a public display monitor with a very strange issue.
    Whenever I connect my PC to it, I get a red image, however if I open a window the image becomes "unstable" and sometimes I get a no signal error. The video bellow should explain it better.
    Video: https://www.youtube.com/watch?v=pnN2NhTTfIU
    I didn't find any visible damage when I opened the TV, but I did find it had a different design than most normal plasma TVs. It has a VGA board (HX board in the service manual), where the VGA connector is. This board plug into the J board, which then plugs into the D board (the main board).
    I remember that I tested a few components the last time I worked on this thing, but since this is a dumpster dive find I didn't get much into at, and it was a few months ago, so I don't remember exactly what I tested, only that I didn't find any failed components.
    Anyway, what's the most common cause of an issue like that? I was thing about a board swap, but there's 3 boards that handle the VGA signal and it's going to be big investment to replace them all.
    Any help, information and advice is welcome!
    Last edited by reaper57; 04-07-2016, 03:32 AM.
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  • reaper57
    Badcaps Veteran
    • Sep 2014
    • 216
    • Norway

    #2
    Re: Panasonic TH-42PWD4 Red image and No signa

    Anyone?
    P.S. Forgot to post a link to the service manual, so here it is:
    Keyboard not detected, press F1 to continue...

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