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Sears TV, B+ to high!

Discussion in 'Electronic Repair' started by Dani, Sep 24, 2007.

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  1. Dani

    Dani Guest

    Model # 774-15580, "Prima" Model # Q3250. BSC29-N1111 flyback was
    arcing, replaced it, then R313 1.0 ohm fusible burnt open, almost
    right away, after startup, & found vertical IC
    N301 was bad, now the set5 works great, but the B+ while running is
    143 volts dc, it's the
    usual 90 vdc at standby. Is this normal, for this set? Thanks, Dani.
  2. b

    b Guest

    if in doubt i would replace the caps in the power supply, as these can
    often lead to excessive b+ if bad. try and look for
    the schematic.
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