Samsung LN52A550 Tab bond faulure or bad screen?

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  • coreyand
    Senior Member
    • Nov 2014
    • 88
    • USA

    #1

    Samsung LN52A550 Tab bond faulure or bad screen?

    I got this 52" from a guy down the road, the screen was not this bad off until I started messing with the tab bondings. If I hold some of them with only 2 hands and some ample pressure I can nearly get half of the screen back. I have an exact match TCON board for this tv(im not 100% if its good or not) but when I install the TCON into the tv I get the same picture so that leads me to believe that it is most likely the screen.

    My question is, is this screen too far gone with bad tab bonds or could it possibly be repaired by a method like budm here https://www.badcaps.net/forum/showth...udm+52+samsung

    Any feedback would be helpful, attempt the fix if it is the tab bondings or just part the tv out.

    Thanks for your opinion guys.

    Corey.
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Samsung LN52A550 Tab bond faulure or bad screen?

    Try flexing the screen to see if it will make it change what you see on the screen, also try re-seating the cables.
    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

    • mross76
      Member
      • Mar 2015
      • 12
      • usa

      #3
      Re: Samsung LN52A550 Tab bond faulure or bad screen?

      i have a similar problem

      Comment

      • coreyand
        Senior Member
        • Nov 2014
        • 88
        • USA

        #4
        Re: Samsung LN52A550 Tab bond faulure or bad screen?

        Flexing changed a little bit of the lines and what not. Reseating the cables I didnt notice a difference.

        Comment

        • 102mm
          Senior Member
          • Dec 2013
          • 181
          • us

          #5
          Re: Samsung LN52A550 Tab bond faulure or bad screen?

          Tabs for sure.. Ive fixed 2 of those models. they haven't had any other problems for over 18 months now.
          Craigslist Picks & Fixes

          2 ea - Samsung 52"
          Samsung 60"

          Comment

          • ljintexas
            LJinTexas
            • Jan 2015
            • 669
            • USA

            #6
            Re: Samsung LN52A550 Tab bond faulure or bad screen?

            102, did you use Buds method or something else?

            Comment

            • coreyand
              Senior Member
              • Nov 2014
              • 88
              • USA

              #7
              Re: Samsung LN52A550 Tab bond faulure or bad screen?

              I have tried, I am seeming to be unsuccessful at restoring the panel by messing with the tabs. Is it possible that the panel is just bad?

              Comment

              • tom66
                EVs Rule
                • Apr 2011
                • 32560
                • UK

                #8
                Re: Samsung LN52A550 Tab bond faulure or bad screen?

                Yes, a bad panel is possible. Samsung have a lot of issues in this regard.
                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

                • coreyand
                  Senior Member
                  • Nov 2014
                  • 88
                  • USA

                  #9
                  Re: Samsung LN52A550 Tab bond faulure or bad screen?

                  That stinks. The side with the vertical lines I cant get hardly anything to change with that, and the other side I can get to clear up but only about 2/3 of the half of the screen. Thinking it was a tcon I replaced it with the same result. Im calling it on this one guys, a bad panel I suppose.

                  Comment

                  • 102mm
                    Senior Member
                    • Dec 2013
                    • 181
                    • us

                    #10
                    Re: Samsung LN52A550 Tab bond faulure or bad screen?

                    Originally posted by ljintexas
                    102, did you use Buds method or something else?
                    No.. Actually i found the fix on accident.. i had the tabs exposed and touched one of the flex cables accidentally and it cleared up for a sec.. i fixed both of the TVs i had the same way, a little piece of material to act as a heatsink for the chip on the ribbon cable going to the panel
                    Craigslist Picks & Fixes

                    2 ea - Samsung 52"
                    Samsung 60"

                    Comment

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