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Panasonic 21" monitor C2192P

Discussion in 'Electronic Repair' started by Aslaner, Jun 26, 2004.

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  1. Aslaner

    Aslaner Guest

    This machine has NO heater voltage,
    I tried to follow it but without a diagram it is a bit hard since all the
    boards are multilayers.

    Would anyone out there have experience this problem before and have the
    source of that Heater voltage.

    Thank you for your help
  2. James Sweet

    James Sweet Guest

    Look for bad soldering or bulging capacitors in the power supply.

    If you can't track it down, you can always wind 2 or 3 turns of wire around
    the flyback core and use that to power the heater just so long as nothing
    else is wrong.
  3. Aslaner

    Aslaner Guest

    I think that I found my problem. I have to finish it off.

    It was not easy since this monitor has circuit board with runs on both side
    which was the source of the problem.
    I traced the difficulties the heater voltage from the board at the back of
    the Picture tube to the mainboard and it was going a bit everywhere with a
    circuit run on the component side of the board.
    I finally lost the trace behind capacitor C867, upon removal of that
    capacitor, I noticed that the run was open and because the capacitor had
    leeked and evantually corroded the run for the heater voltage and quite
    possibly shorted to one side of the capacitor lead .

    If you see one of these sets with "No heater" voltage the chances are that
    the culprit will be that.
  4. Aslaner

    Aslaner Guest

    Sure enough problem solved. It was indeed the heater voltage cct run behind
    capacitor C867 that was causing the problem. All that because the capacitor
    had leaked.
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