Lg 60pg60fua occasional black horizontal line

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  • braxton
    Senior Member
    • Nov 2009
    • 146
    #1

    Lg 60pg60fua occasional black horizontal line

    I picked up this 2008 60" plasma. It has an occasional black horizontal line that briefly appears on the top half of the screen and then goes away. I pulled off the back and found that when I gently press on one of the heatsinks on the upper Y buffer board i can make the black bar appear. If I either press down gently or lift up gently on the heatsink, the black bar appears. When I release, the black bar goes away.

    So I have a bad connection or short on one of the chips on the upper buffer board I suspect. It is very hard to find this part online, especially since I am from Canada.

    Could a heatgun repair this? Oven reflow? Any suggestions?
    Thanks.
    Tags: None
    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain
      #2
      Re: Lg 60pg60fua occasional black horizontal line

      Reseat buffer connections going to the PDP.
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

        Comment

        • braxton
          Senior Member
          • Nov 2009
          • 146
          #3
          Re: Lg 60pg60fua occasional black horizontal line

          Originally posted by ReeceyBurger123
          Reseat buffer connections going to the PDP.
          I did try re-seating all ribbon cables and the connectors to the YSUS main but no change. Maybe I will clean the connections with isopropyl alcohol and try again. Pressing on the middle IC chips reproducibly cause the black bar to appear so I think it is a chip connection issue. I might need to remove the thick glue strip holding the chip/heatsink assembly in place -for a closer look...

            Comment

            • braxton
              Senior Member
              • Nov 2009
              • 146
              #4
              Re: Lg 60pg60fua occasional black horizontal line

              Oven reflow seems to have done the trick, time to put it through its paces...

                Comment

                • braxton
                  Senior Member
                  • Nov 2009
                  • 146
                  #5
                  Re: Lg 60pg60fua occasional black horizontal line

                  Worked fine for about 4 hours and then horizontal strip started acted up again due to heat.
                  The heatsink over the chips is sealed by a rubbery compound that I'm not sure how to remove.
                  Also seems next to impossible to find an upper buffer board for sale.
                  Does anyone have a spare part EBR38574601???

                    Comment

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