Panasonic TX-P42S21 dark picture

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  • marekk
    Member
    • Mar 2013
    • 36
    • UK
    #1

    Panasonic TX-P42S21 dark picture

    Hi,

    I'm trying to fix this panasonc plasma TV.
    TV has got very dark almost invisible picture from all sources like HDMI, tuner or scart but OSD/menu works fine. I have narrowed the problem to main AV board TNPH0845. This board is pretty difficult to get and expensive. Have anybody fixed to component level that kind of fault?
    I will appreciate any help

    Best regards
    Marek
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Panasonic TX-P42S21 dark picture

      Personally I would be more leaning towards the SS or P board.
      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

        • marekk
          Member
          • Mar 2013
          • 36
          • UK
          #3
          Re: Panasonic TX-P42S21 dark picture

          I have replaced main board with TNPH0838 from TX-P42G20 and picture was OK. This is why I think it is main board problem.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Panasonic TX-P42S21 dark picture

              Sorry, completely missed the bit where you said the OSD was fine.

              In the service menu, there are options for W-GAIN, R-GAIN, B-GAIN, G-GAIN, etc. Have you tried adjusting them? Perhaps compare with G20 for values.
              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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