BN96-00249A PSU from old 480i Sams. PS-42P3S No Vs supply

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  • Alastair E
    Chief Womble
    • Mar 2013
    • 1963
    • U.K.
    #1

    BN96-00249A PSU from old 480i Sams. PS-42P3S No Vs supply

    Ive checked all the supplies on this one, but find there's No Vs.

    There doesn't appear to be any drive to the inverter mosfets supplying the Vs side of things--it appears to come from the same chip that controls the PFC circuit....
    Chip has a 13V supply and all the small caps around it are new....

    Ive replaced the PFC fets and the Vs drive fets. No change....

    Any ideas?
    TELEFIX

    How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
    http://www.irf.com/technical-info/appnotes/an-1088.pdf
    PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: BN96-00249A PSU from old 480i Sams. PS-42P3S No Vs supply

      Checked ON/OFF signal to this controller IC?
      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

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