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Hitachi 22LD3750DC TV repair, white screen, problem in AUO T220SW01-V0 panel

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    Hitachi 22LD3750DC TV repair, white screen, problem in AUO T220SW01-V0 panel

    This TV shows all white screen, sound OK.

    Panel is an AUO T220SW01 V0, 22", 4xCCFL. I expected open T-CON power fuse, but no luck this time. Fuse is OK, and there’re 5V at test-point. Also measured 3.3V and other voltages.

    I see that after a while, some bluish smudges appear slowly on screen.

    I’ve tried to connect a ChiMei M190A1-L02 (that have the same LVDS connector) and it works, so it seems a panel problem, as expected.

    After some observation, I see that there’re about 5-6 horizontal lines of active pixels on top of screen. They contain no valid image. Seem like alternating white and black pixels.

    Anything I can do before giving up?
    Last edited by Chungalin; 06-15-2016, 08:51 AM.

    #2
    Re: Hitachi 22LD3750DC TV repair, white screen, problem in AUO T220SW01-V0 panel

    Sounds like a failed tab bond driver to me. I have had this before on similar screens.
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    https://www.facebook.com/Telford-Tel...7894576335359/

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      #3
      Re: Hitachi 22LD3750DC TV repair, white screen, problem in AUO T220SW01-V0 panel

      Thanks Reecey. I’ve parked this repair because I see no chances of success.

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