Samsung 4K LCD white vertical banding in center

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  • iampivot
    Member
    • Nov 2015
    • 24
    • Australia

    #1

    Samsung 4K LCD white vertical banding in center

    I'm troubleshooting a Samsung LS28D590DS 28" 4K monitor which has white vertical banding in the center of the LCD panel. The image looks like it's distorted slightly as well in the middle. Am wondering if this could be caused by the panel, t-con board or the main board?



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  • iampivot
    Member
    • Nov 2015
    • 24
    • Australia

    #2
    Re: Samsung 4K LCD white vertical banding in center

    Here's a picture of the controller board. I guess it might be a problem with some components in the analogue circuitry just before the LVDS connector?

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    • iampivot
      Member
      • Nov 2015
      • 24
      • Australia

      #3
      Re: Samsung 4K LCD white vertical banding in center



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      • iampivot
        Member
        • Nov 2015
        • 24
        • Australia

        #4
        Re: Samsung 4K LCD white vertical banding in center

        The panel is an Innolux M280DGJ-L30, I assume such banding is very unlikely to be a bad panel?

        Comment

        • iampivot
          Member
          • Nov 2015
          • 24
          • Australia

          #5
          Re: Samsung 4K LCD white vertical banding in center

          White image when only the t-con board is connected to the panel. When the mainboard is connected, there's also a bit of 'double image' on the left side of the screen with the moving check signal cable popup. It's clear on the other side of the screen.



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          • iampivot
            Member
            • Nov 2015
            • 24
            • Australia

            #6
            Re: Samsung 4K LCD white vertical banding in center

            White image when only the t-con board is connected to the panel. When the mainboard is connected, there's also a bit of 'double image' on the left side of the screen with the moving check signal cable popup. It's clear on the other side of the screen.



            Comment

            • iampivot
              Member
              • Nov 2015
              • 24
              • Australia

              #7
              Re: Samsung 4K LCD white vertical banding in center

              Same problem with different t-con board.

              Comment

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