LG 60PK550 Flickering picture lower half of screen

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  • Geoff.
    Member
    • Apr 2015
    • 20
    • Australia
    #1

    LG 60PK550 Flickering picture lower half of screen

    Hi, hoping for some help please. I've searched through the threads on Plasma TV's and this particular model and have been unable to find appropriate answers. I went through tom66's guide however couldn't relate to my issue.

    This is my mums TV and I've recently replaced the PCB as recommended by the tech who visited and diagnosed. Now its switched on but the bottom half of the panel appears to flicker and reflect the top half mostly when light or multiple bright colours are displayed. It's visable in both Tuner and HDMI but less so on the HDMI. If anyone can provide any suggestions or assistance it would be greatly appreciated.





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    • Alastair E
      Chief Womble
      • Mar 2013
      • 1963
      • U.K.
      #2
      Re: LG 60PK550 Flickering picture lower half of screen

      A possible Buffer-board fault or Control-board problem.

      Try running the test-patterns by jumpering the points on the Control-board with the LVDS disconnected...
      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

        • Geoff.
          Member
          • Apr 2015
          • 20
          • Australia
          #3
          Re: LG 60PK550 Flickering picture lower half of screen

          Thanks Alastair, what is the LVDS?

            Comment

            • Alastair E
              Chief Womble
              • Mar 2013
              • 1963
              • U.K.
              #4
              Re: LG 60PK550 Flickering picture lower half of screen

              LVDS is multi way cable from Mainboard to control-board...
              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

                • Geoff.
                  Member
                  • Apr 2015
                  • 20
                  • Australia
                  #5
                  Re: LG 60PK550 Flickering picture lower half of screen

                  Okay thanks i will give it a try

                    Comment

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