Lg 55UF850V lines and image displacement

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  • Tdiamarelo
    Member
    • Jan 2020
    • 38
    • Luxemburgo

    #1

    Lg 55UF850V lines and image displacement

    Hi folks!

    Have an Lg whit something like interferences...
    Lines and image displacement. Could it be a bad T-con or motherboard or just a grounding fault?
    For better understanding i made a video whit the issue.

    https://drive.google.com/file/d/1WZh...w?usp=drivesdk
    Last edited by Tdiamarelo; 02-11-2020, 10:21 AM.
  • R_J
    Badcaps Legend
    • Jun 2012
    • 9535
    • Canada

    #2
    Re: Lg 55UF850V lines and image displacement

    attach your pictures using Go Advanced and click on the paperclip

    Comment

    • Tdiamarelo
      Member
      • Jan 2020
      • 38
      • Luxemburgo

      #3
      Re: Lg 55UF850V lines and image displacement

      I took some creen shots from the video file.
      Here they are. This interference you see appens very fast.
      Attached Files
      Last edited by Tdiamarelo; 02-11-2020, 03:24 PM.

      Comment

      • William1967
        Badcaps Veteran
        • Nov 2017
        • 203
        • Netherlands

        #4
        Re: Lg 55UF850V lines and image displacement

        Looks like a panel problem.

        Comment

        • Tdiamarelo
          Member
          • Jan 2020
          • 38
          • Luxemburgo

          #5
          Re: Lg 55UF850V lines and image displacement

          Or is it just a bad connection on the t-con?

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: Lg 55UF850V lines and image displacement

            Bad panel.
            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

            • budwich
              Badcaps Legend
              • Jul 2015
              • 3097
              • Canada

              #7
              Re: Lg 55UF850V lines and image displacement

              input a video test pattern like smpte color bar which gives a full spectrum of colors along with a fixed pattern so that you can readily see issues. At this point, the limited pictures appear to indicate a panel problem but perhaps a poor connection in the intercabling of the boards and panel.

              Comment

              • Tdiamarelo
                Member
                • Jan 2020
                • 38
                • Luxemburgo

                #8
                Re: Lg 55UF850V lines and image displacement

                Problem SOLVED.
                Bad Main Board.
                Replaced the main board and set works fine.

                Comment

                • budm
                  Badcaps Legend
                  • Feb 2010
                  • 40746
                  • USA

                  #9
                  Re: Lg 55UF850V lines and image displacement

                  https://www.badcaps.net/forum/attach...3&d=1581456233
                  So you no longer see double images (Non Programme) when the new main board is replaced?
                  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

                  • Tdiamarelo
                    Member
                    • Jan 2020
                    • 38
                    • Luxemburgo

                    #10
                    Re: Lg 55UF850V lines and image displacement

                    Correct. The double image was coming and going only for 1 second or even less.. and all the other lines also, and bouncing around the screen, that is why I posted the Video file but is not allowed or accepted by the forum.
                    Maybe a faulty image processor from the main board.

                    Comment

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