RCA Plasma TV Strange Picture

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  • Sevenqi
    Badcaps Veteran
    • Jul 2011
    • 292
    #1

    RCA Plasma TV Strange Picture

    I got a RCA plasma TV Model p42wed33, the problem is that when cool power on, whole screen looks dark/weak, as the time passing, I can see the the darks disappear pixel by pixel very slowly,(The first pixel disappearance is from some point, then spread to whole screen, looks like a Windows game) after 40 minutes, all the screen changed to normal, and picture looks perfect.
    I turn if off and turn on, picture is good, so it happens only when cool power up.
    I checked the all the boards, no visible bad caps, Y-Board and Z-Board fueses are good.
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: RCA Plasma TV Strange Picture

      Possibly bad cap on X-main. Who makes the plasma panel in this set? Samsung, LG, Panasonic?
      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • Sevenqi
          Badcaps Veteran
          • Jul 2011
          • 292
          #3
          Re: RCA Plasma TV Strange Picture

          The Panel is LG pdp42v7.....

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: RCA Plasma TV Strange Picture

              Pretty ancient 480p set, I would suspect Vzbias for plasma panel, followed by 15V supply to Z-sus.
              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                Comment

                • Sevenqi
                  Badcaps Veteran
                  • Jul 2011
                  • 292
                  #5
                  Re: RCA Plasma TV Strange Picture

                  After a few days turn on and off, the problem seems not exist anymore. I'll try more days to see. Actually I didn't do anything..

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: RCA Plasma TV Strange Picture

                      Rule #134 of electronics repair: If a problem goes away by itself, it will come back by itself.
                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

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