samsung le46c755 2 vertical rows of dead red pixels

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  • platinumfin
    New Member
    • Mar 2015
    • 6
    • finland

    #1

    samsung le46c755 2 vertical rows of dead red pixels

    Hi! I have about 3yrs old 3d tv and suddenly there is 2 vertical lines 1 pixel wide of dead red pixels. Is it panel fault or something else? Blue and green colour are visible but no red on those lines...
  • Alastair E
    Chief Womble
    • Mar 2013
    • 1963
    • U.K.

    #2
    Re: samsung le46c755 2 vertical rows of dead red pixels

    Probably Tab-Bond failure....
    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

    • platinumfin
      New Member
      • Mar 2015
      • 6
      • finland

      #3
      Re: samsung le46c755 2 vertical rows of dead red pixels

      So.....any hope for fix¿

      Comment

      • freakaftr8
        Badcaps Legend
        • Oct 2012
        • 3743
        • USA

        #4
        Re: samsung le46c755 2 vertical rows of dead red pixels

        you could try pressing down on the affected tab that goes into the panel can put a shim underneath the metal frame. However if this does fix the problem it will eventually get worse to the point where it's rendered useless for that whole array of pixels will be dead. It's unfortunate but just part of the game with LCD panels
        Did I leave the soldering iron on?

        Comment

        • Shinju
          Badcaps Legend
          • Mar 2014
          • 1239
          • USA

          #5
          Re: samsung le46c755 2 vertical rows of dead red pixels

          Or.. you could post some photos and we can help diagnose the issue a little better!

          Just say'n

          Comment

          • platinumfin
            New Member
            • Mar 2015
            • 6
            • finland

            #6
            Re: samsung le46c755 2 vertical rows of dead red pixels

            There is poor picture but you can see what i mean (first picture flipped sideways somehow )



            Attached Files

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            • Shinju
              Badcaps Legend
              • Mar 2014
              • 1239
              • USA

              #7
              Re: samsung le46c755 2 vertical rows of dead red pixels

              Looks like tab bond failure, do they go away after the panel warms up or change colors?

              Comment

              • platinumfin
                New Member
                • Mar 2015
                • 6
                • finland

                #8
                Re: samsung le46c755 2 vertical rows of dead red pixels

                Originally posted by Shinju
                Looks like tab bond failure, do they go away after the panel warms up or change colors?
                Nope they wont go away. Are the bonds upper or lower side of screen?

                Comment

                • platinumfin
                  New Member
                  • Mar 2015
                  • 6
                  • finland

                  #9
                  Re: samsung le46c755 2 vertical rows of dead red pixels

                  And by the way i have le46c659 model too and i was wondering could it be any sense to switch panel from that to the other?

                  Comment

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