Weird Screen Failure Samsung UN55KU6300F

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  • aaronwt6
    Badcaps Veteran
    • Apr 2013
    • 855
    • US
    #1

    Weird Screen Failure Samsung UN55KU6300F

    Just posting this out of curiosity of who else has seen similar failures on this or other similar models. I picked this up yesterday and was told by the owner that they were watching the TV one evening. Zero issues. Next morning it looked like the attached. The spot is almost a perfect circle and there is no visible impact damage. She said that it was not hit with anything and there were no kids in the house. I personally haven't seen a failure quite like this.
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    • JDC
      Badcaps Veteran
      • May 2015
      • 273
      • USA
      #2
      Re: Weird Screen Failure Samsung UN55KU6300F

      I've seen this before but I can't tell you why/how it happened, sorry.

        Comment

        • chrismurphy
          Badcaps Veteran
          • May 2014
          • 251
          • australia
          #3
          Re: Weird Screen Failure Samsung UN55KU6300F

          looks like a cap from the led backlight has stuck to the diffusers
          I cant see how it could be a screen fault

            Comment

            • R_J
              Badcaps Legend
              • Jun 2012
              • 9567
              • Canada
              #4
              Re: Weird Screen Failure Samsung UN55KU6300F

              The fault is with the lcd panel itself, there are video's showing a way to remove this by using a q-tip and working the black circle to the edge of the panel. Here is one video : https://www.youtube.com/watch?v=X_sn6yU5tao
              There are other video's, just search "black circle on lcd panel"
              I have not tried this myself as I don't have not had a panel with this problem
              Last edited by R_J; 10-14-2020, 09:59 AM.

                Comment

                • Diah
                  Badcaps Legend
                  • Feb 2013
                  • 6403
                  • Germany
                  #5
                  Re: Weird Screen Failure Samsung UN55KU6300F

                  interesting this black circle.. but why at the video and OP photo happened only at top end of the panel ??? we saw some dirt or insect spots before... i would take out the panel and take close look from behind first before . start with this massage

                    Comment

                    • aaronwt6
                      Badcaps Veteran
                      • Apr 2013
                      • 855
                      • US
                      #6
                      Re: Weird Screen Failure Samsung UN55KU6300F

                      Originally posted by R_J
                      The fault is with the lcd panel itself, there are video's showing a way to remove this by using a q-tip and working the black circle to the edge of the panel. Here is one video : https://www.youtube.com/watch?v=X_sn6yU5tao
                      There are other video's, just search "black circle on lcd panel"
                      I have not tried this myself as I don't have not had a panel with this problem
                      I worked at it for a while and was able to get some of the pixels to clear up but no where near the success the person in the video was having. It did at least prove to me that the spot was not a crack. The change in pressure caused the spot to shift as I was working on it. Very strange indeed.

                        Comment

                        • R_J
                          Badcaps Legend
                          • Jun 2012
                          • 9567
                          • Canada
                          #7
                          Re: Weird Screen Failure Samsung UN55KU6300F

                          It may take some time to get rid of the spot, Not much of an option other than replacing the lcd.

                            Comment

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