LG Plasma TV Bad Y Buffer Replacement

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  • Bad_Boards
    New Member
    • Apr 2021
    • 2
    • US
    #1

    LG Plasma TV Bad Y Buffer Replacement

    Background:
    I have a LG 50PA550 Plasma TV which stopped displaying a picture. The sound works just fine. The outputs of the power supply board were within 2% of the expected values. After removing the Y top buffer the bottom half of the TV started working.
    Question:
    Do I have to order both a Y-Buffer and Y-Sustain board to fix this?
    Could I somehow check the Y-Sustain board to see if there was any damage done to it?
    Tags: None
    • Biruslapio
      Badcaps Veteran
      • Nov 2013
      • 552
      • Brasil
      #2
      Re: LG Plasma TV Bad Y Buffer Replacement

      If the bottom half of the panel is displaying correctly, for example: not dim, not grainy or other common Z/Y boards partial failure, it should be fine, some LG plasmas require upper buffer boards to display any picture on the bottom half.

        Comment

        • ajshoe
          ajshoe
          • Dec 2012
          • 477
          • usa
          #3
          Re: LG Plasma TV Bad Y Buffer Replacement

          you need a new top buffer board.

            Comment

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