Sharp LC-37HV4E washed out pic

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  • bbjunkie
    Badcaps Veteran
    • Dec 2011
    • 301
    #1

    Sharp LC-37HV4E washed out pic

    Hi guys,

    Been a while since I've been in, life getting in the way etc.

    Recently was given a Sharp LC-37HV4E to repair, a strange one this - comes with an AVC unit which separately controls the video. It is linked to the TV (monitor really) by what looks like a DVI cable, and some other strange one I've never seen before (perhaps a proprietary one)

    The story is that this TV was working, and after a house move is now not.

    Long story short, the picture is very washed out looking, looks almost like the brightness is turned up too high. Only a tiny hint of colour in it. Anyway, pic attached. Took it close up so the camera could actually see what was on the screen.

    Any tips before I dig deep into this one? (Already tried reseating the ribbon cables to LCD and looked over the boards for suspect caps, gave the video chips a poke on the main board in case of poor joints etc)


    Cheers and its good to be back
    Attached Files
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    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Sharp LC-37HV4E washed out pic

      It looks like something went out in the Gamma voltage ref, circiut in the T-CON board.
      Similar to this:
      https://www.badcaps.net/forum/showth...mma#post304275
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

        • bbjunkie
          Badcaps Veteran
          • Dec 2011
          • 301
          #3
          Re: Sharp LC-37HV4E washed out pic

          Cheers Bud, I came across that post last night while searching the forum. Unfortunately the main board (for what there is of it) and tcon are all one.

          I will check voltages etc and get some pics for the weekend.

          Thanks

          /bb

            Comment

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