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Sony kdl-48r550c -vertical and horizontal lines!

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    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!
    Attached Files

    #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


      #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


        #4
        Re: Sony kdl-48r550c -vertical and horizontal lines!

        Originally posted by budwich View Post
        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


          #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..

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