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    samsung ln52a550p3fxza bad panel tcon?

    so I got this tv and it had no tcon in it so I called the guy and was able to get the tcon part number from the board that was in it, ordered tcon and tv worked good yesterday turned it off and left shop, came back put back of tv on then this is what im getting on picture now, but whats weird is im not even getting Samsung meldody? does that matter? but im trying to figure out if its bad panel or tcon or what?
    Attached Files

    #2
    Re: samsung ln52a550p3fxza bad panel tcon?

    Bad tab bonding.
    https://www.badcaps.net/forum/showth...udm+52+samsung
    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


      #3
      Re: samsung ln52a550p3fxza bad panel tcon?

      Tab-bond or bad panel. Melody has no relevance as can be turned off in user-settings.
      TELEFIX

      How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
      http://www.irf.com/technical-info/appnotes/an-1088.pdf
      PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

      Comment


        #4
        Re: samsung ln52a550p3fxza bad panel tcon?

        I have never fixed a tab bond is this something that takes a lot of time and is it worth doing?

        Comment


          #5
          Re: samsung ln52a550p3fxza bad panel tcon?

          Tab-bonds are something you cannot fix. You can only Botch them using pads to force them to contact the glass of the panel or the PCB.
          TELEFIX

          How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
          http://www.irf.com/technical-info/appnotes/an-1088.pdf
          PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

          Comment


            #6
            Re: samsung ln52a550p3fxza bad panel tcon?

            so your saying you can only temporary fix them? how long would something like that last? I was going to fix it and sell the tv? but I don't wanna sell it to someone if its going to go bad soon

            Comment


              #7
              Re: samsung ln52a550p3fxza bad panel tcon?

              My 52" Samsung and Sony were done on Dec 2012 and still going strong, may be I am the lucky one but then aging the TVs have been in the same spots ever since.
              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


                #8
                Re: samsung ln52a550p3fxza bad panel tcon?

                I have one here and I can not find any problems with the panel. Seems to be to be the T-Con board. The people who had it said they had dropped it but I can't find any cracks. I swapped the two ribbon cables from the T-Con to the panel to see if that was it and no change. So basically I have one side not working at all. I also tested the circuit board on the panel and can't find any bad parts.

                I also pressed on the tab bonds and the picture had no change, they look perfect. No burn marks. All looks 100% Perfect on the panel.

                I have seen this before when the ribbon cable was backwards but not the case here. And I do not have a T-Con board to swap out.

                What do you think?
                Attached Files

                Comment


                  #9
                  Re: samsung ln52a550p3fxza bad panel tcon?

                  When I mess with the T-Con board the image changes. It seems there is a broken connection on the T-Con board. My friend says he has a couple so I am going to test with his.

                  Comment


                    #10
                    Re: samsung ln52a550p3fxza bad panel tcon?

                    Well I tried 2 other T-Con boards and I have the same problem so it must be the panel. Both other T-Con boards showed an image. Looks like it may be the connection where the ribbon cable from the T-Con boards goes. If I can't fix it then I am giving up on it. I will keep the TV for a test TV so I can test other boards in it. If I fix it I am not sure what I will do with it.

                    Comment


                      #11
                      Re: samsung ln52a550p3fxza bad panel tcon?

                      Read the other threads lol crist almighty !
                      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                      https://www.facebook.com/Telford-Tel...7894576335359/

                      Comment

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