Help. Sony kd-65x85dj vertical lines

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  • visionbluedemon
    New Member
    • Nov 2017
    • 2
    • Philippines

    #1

    Help. Sony kd-65x85dj vertical lines

    First. it has no picture at all. i solved it by covering the ckv lines using tape to to block the connections

    Second. now has picture but with vertical lines that follow the image. tcon board ic overheating

    tried blocking LC lines too, but same results




    is it lcd panel issue or tcon board issue?
  • Davi.p
    Hobbist Tech
    • Sep 2009
    • 4322
    • Italy - Milan

    #2
    post picture of bad video.. otherwise describe it in full particulars..

    Comment

    • visionbluedemon
      New Member
      • Nov 2017
      • 2
      • Philippines

      #3
      Originally posted by Davi.p
      post picture of bad video.. otherwise describe it in full particulars..

      Comment

      • Davi.p
        Hobbist Tech
        • Sep 2009
        • 4322
        • Italy - Milan

        #4
        Appears the Vcom voltage has some flaws, it could be too low, so when the turn of source voltage must be negative respect to vcom, with the vcom low the resulting value of pixels source is much positive, so a dark pixel is displayed brighter.. the most possible cause is a degradating connection in ribbon connection.. no solution by me for now.. i stopped troubling with these damn things.. bye

        Comment

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