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

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    #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.
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    #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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      #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.

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        #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.

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