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

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