LG 42PC1D plasma - clicking repeatedly

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  • fzabkar
    Badcaps Veteran
    • Mar 2009
    • 772
    • Australia

    #41
    Re: LG 42PC1D plasma - clicking repeatedly

    I suspect that one optocoupler performs an AC-Detect function while the other senses the PFC supply voltage.

    I have uploaded my reverse engineered diagram of the PFC voltage detection circuit in an LG 42PJ350 plasma TV here:

    https://www.badcaps.net/forum/showpo...05&postcount=3

    Perhaps it is a similar circuit.

    Comment

    • pecrie
      Senior Member
      • Nov 2011
      • 182

      #42
      Re: LG 42PC1D plasma - clicking repeatedly

      Hi everyone ,

      I'm also having a clicking power supply on a LG 42PC1R tv.
      Do some of you have a schematic of the power supply 68709M0031B ?

      Also known as 68719PT299A - LGE number 68712PT299

      Thank you

      Comment

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