PDP Samsung 42" horizontal lines.

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  • paulstef
    Badcaps Veteran
    • Dec 2013
    • 724
    • Canada

    #1

    PDP Samsung 42" horizontal lines.

    Hi guys.

    Got this S42AX-SB01 PDP Module.

    I assume this looks a lot like upper and lower Y-board are to be replaced?

    Horizontal lines everywhere except the lowest part.

    What exactly happens to the ICs on these boards? I can't see what chips they are, heatsinks are glued onto them...

    Thanks!

    EDIT: It's SN755867. Apparently I would need to replace 10 of them.. (?)
    Attached Files
    Last edited by paulstef; 10-04-2014, 09:36 PM. Reason: added picture of IC
  • paulstef
    Badcaps Veteran
    • Dec 2013
    • 724
    • Canada

    #2
    Re: PDP Samsung 42" horizontal lines.

    I swapped the last two ICs on the bottom of the lower Y buffer with the ones above them. Now the lines disappeared from that part. (I hadn't assembled the last two supposedly faulty ICs when I took the picture.)

    So yes it seems to be these buffer ICs that are faulty. 10 of them :-/

    They are hard to replace although not expensive. Don<t know yet if I replace all ten of them or replace the two boards althogether.
    Attached Files
    Last edited by paulstef; 10-06-2014, 06:11 PM. Reason: added pic

    Comment

    • mmartell
      Badcaps Legend
      • Oct 2013
      • 3189
      • Canada

      #3
      Re: PDP Samsung 42" horizontal lines.

      If you were so inclined you could just isolate and replace the faulty ones.

      Comment

      • paulstef
        Badcaps Veteran
        • Dec 2013
        • 724
        • Canada

        #4
        Re: PDP Samsung 42" horizontal lines.

        I was lucky enough to find both buffer boards. Removing those chips would have been quite some work because they have a solder pad underneath too + all the silicon glue around them...

        Comment

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