Panasonic TH-42PX70BA 7 Blink,--SOS 7 Fixed.

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

    Panasonic TH-42PX70BA 7 Blink,--SOS 7 Fixed.

    Above set dead apart from seven blink of red std-by lamp.

    Checking the manual suggests that the Inverter for the various supplies on the SC board is unhappy.

    Disconnecting both buffers from the SC completely, and set runs.

    Reconnected bottom-buffer only, back to SOS-7

    Disconnected bottom buffer re-connected top buffer, set runs with half a picture proving bottom buffer bad.

    --A short was found in one of the chips of the bottom buffer.
    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!
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