LG Plasma 60PA6550-UF Pop No Picture

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  • spicedrvr
    New Member
    • Oct 2012
    • 8
    • USA
    #1

    LG Plasma 60PA6550-UF Pop No Picture

    Y-Sustain had shorted transistors. New Y-Sustain has no picture. Removing either buffer board will show colored noise with vertical bars on either top or bottom of screen.

    Buffers replaced - no change. 2nd Y-Sustain replaced - no change.

    When you listen closely to the Y-Sustains operating, there is a short chirp. As if a switch mode power supply was operating with a shorted output line.

    Is this a bad panel ?
    Tags: None
    • Andrew F. Ali
      Badcaps Legend
      • Jan 2014
      • 2450
      • Trinidad & Tobago
      #2
      Re: LG Plasma 60PA6550-UF Pop No Picture

      Look at the Z-sus Bd. It may have some shorted FETs and/or loose coils.

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