Sony kdl-48r550c -vertical and horizontal lines!

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  • kgavionics
    Senior Member
    • Apr 2017
    • 152
    • Canada
    #1

    Sony kdl-48r550c -vertical and horizontal lines!

    Hello guys
    I got this Sony kdl-48r550c which has vertical and horizontal lines (see picture below)
    I disconnected the ribbon cable from both the Tcon board and main board and the lines disappeared completely which in my opinion indicates that the panel is still good!

    Is anybody have any idea what could be the next step to troubleshoot this tv?

    Thanks in advance guys!
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    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6643
      • Wales
      #2
      Re: Sony kdl-48r550c -vertical and horizontal lines!

      I think the problem is with the panel. Most of those lines appear to follow the OSD.
      Willing to help but I'm no expert.

        Comment

        • budwich
          Badcaps Legend
          • Jul 2015
          • 3097
          • Canada
          #3
          Re: Sony kdl-48r550c -vertical and horizontal lines!

          it would appear to be a "panel problem" as in "things associated with the panel that can't be readily card replaced" because it appears that the set has an integrated tcon / driver board which is attached to the panel. You might get lucky by checking some of the smd components on the driver boards to see if they are shorted. These might be component level replaceable withe careful soldering.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Sony kdl-48r550c -vertical and horizontal lines!

              Originally posted by budwich
              it would appear to be a "panel problem" as in "things associated with the panel that can't be readily card replaced" because it appears that the set has an integrated tcon / driver board which is attached to the panel. You might get lucky by checking some of the smd components on the driver boards to see if they are shorted. These might be component level replaceable withe careful soldering.
              +1
              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

                • Davi.p
                  Hobbist Tech
                  • Sep 2009
                  • 4462
                  • Italy - Milan
                  #5
                  Re: Sony kdl-48r550c -vertical and horizontal lines!

                  That photo of the screen is not enough to.evaluate, i think if it is so hard to put a source on the board, so we can't play lottery..

                    Comment

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