Backlight on, sound on but no picture question

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  • tibimakai
    Badcaps Legend
    • Jan 2012
    • 3680
    • USA
    #1

    Backlight on, sound on but no picture question

    I have picked up nice TV with this issue and if I disconnect one of the ribbon cables after the T-con board, there is picture on one side of the screen. Reversing the ribbons, the screen shows some vertical white and black wide bands.
    This symptom is a bad panel?
    Intentionally did not mention the brand and model number.
    With the last Sharp LED TV, I had problems after I have sold it for parts.
    Norcal does a test which, sounds like my situation. Bad side doesn't look white, as in his situation though.
    https://www.youtube.com/watch?v=GcBwTums_mI
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Backlight on, sound on but no picture question

      Reversing the ribbons WILL make for a bad panel, do not do it!
      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

        • tibimakai
          Badcaps Legend
          • Jan 2012
          • 3680
          • USA
          #3
          Re: Backlight on, sound on but no picture question

          I won't do it, norcal said, that the ribbons are mirrored, so it's impossible to switch them.
          I'm watching this video which also could be my problem, I guess I will take it
          apart to check it out.
          https://www.youtube.com/watch?v=mpp14G-c9Yo
          This TV is a 2012 3D, smart TV and still has these issues? It's a 46D series 6.

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: Backlight on, sound on but no picture question

              Newer LCD TVs have tons of panel failures, it's crazy how bad it's getting now.
              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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