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    #1

    lg 42plasma horizontal line

    I picked up another l/g 42 plasma It has a great picture except for two horizontal lines (pin stripe). One is about 6" from the top and the 2nd is about an inch from the bottom. I would guess at the y buffer or connections from y buffer to pdp. I hope the double line is a clue (pattern)?

    Cadiman
    Tags: None
    #2
    Re: lg 42plasma horizontal line

    There is a service manual in my y board thread. I think it covered this. What is your specific tv.

    Comment

      #3
      Re: lg 42plasma horizontal line

      Not necessary. Replace both Y-buffer boards that for that lines. Be GENTLE with unplugging and plugging orange flat cable! Do this before undoing any of the screws holding Y-buffer board in.

      Cheers, Wizard

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        #4
        Re: lg 42plasma horizontal line

        I removed the y buffer board (one board) first then removed the flat cable. It was easier to hold the ribbons. These were pretty tight. also as you have said before the 4 leds on the control board only tell you something is running. I have worked on about 5 of these and the last led is never lit up. This is a pdp42x3 made for a vizio. Is this chip failure, connector, or solder failure? Thanks again for your help Wizard!
        I will check out said thread. Thanks NxB!
        Cadiman

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          #5
          Re: lg 42plasma horizontal line

          IC failure. Blew a buffer for the line. Y-buffer boards are replaced as whole.

          Cheers, Wizard

          Comment

            #6
            Re: lg 42plasma horizontal line

            I replaced the buffer board and still have the same lines. This can`t be good.

            This will make a nice board tester though!

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              #7
              Re: lg 42plasma horizontal line

              Oouch! Still, there are plenty of plasma tv using same panel.

              Cheers, Wizard

              Comment

                #8
                Re: lg 42plasma horizontal line

                PDP4273?

                I think I have the same model as you, rebranded though.

                I'm curious, the spec for this TV says 1024x768... What resolution do you get through the VGA input?
                "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

                -Leonid Brezhnev (On the Yom Kippur War)

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                  #9
                  Re: lg 42plasma horizontal line

                  The l/g panel is a pdp42x3000 made for vizio. boards are used in lots of models (2006) date code
                  I will use this panel for some reverse engineering ( a good thing )
                  This panel is a 720p as far as I can tell. I have made enough money on 6 tvs so I will deal with the 100.00 loss on this one. I will learn alot with this tv now and will gain a great deal of info and training from it. Well worth the 100 bucks! Thanks for all the help!
                  Cadiman

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