LG 60PV450 - Replaced Z-Sus, now display has purple snow/fuzz

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  • bmschiizz
    Member
    • Oct 2015
    • 22
    • Canada
    #1

    LG 60PV450 - Replaced Z-Sus, now display has purple snow/fuzz

    Hi There,

    If memory serves me right this set was totally dead when I acquired it. Replacing the z-sus brought it back to life but with some purple haziness across the whole panel.

    Vs and Va are within tolerance.

    By making some slight adjustments on the Y and Z boards I was able to make it better but still noticeable

    What are my steps to isolate/solve the problem.
    Attached Files
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    • RJARRRPCGP
      Badcaps Legend
      • Jul 2004
      • 6304
      • USA
      #2
      Re: LG 60PV450 - Replaced Z-Sus, now display has purple snow/fuzz

      Eek! Looks like it's got '00s-style glue!

      (the dreaded brown stuff that's often seen on 2003 and 2004 equipment)
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        Comment

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9588
          • Canada
          #3
          Re: LG 60PV450 - Replaced Z-Sus, now display has purple snow/fuzz

          What about the VSC voltage? what is it and does it match the panel sticker. Try adjusting the set_up & set_dn controls, Mark there positions with a felt marker before adjusting them.
          Last edited by R_J; 04-11-2021, 07:49 PM.

            Comment

            • tvtimmy
              Badcaps Legend
              • Mar 2015
              • 1160
              • usa
              #4
              Re: LG 60PV450 - Replaced Z-Sus, now display has purple snow/fuzz

              Check the solder under the coils of the y and z sus boards. They crack over time and need to be re-soldered with lead solder.

                Comment

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