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Dead Toshiba

Discussion in 'Electronic Repair' started by Golf, Nov 22, 2005.

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  1. Golf

    Golf Guest

    I know I'll get hammered for this, but I don't have the model # of the
    TV with me at this time (I'm at work). I was hoping to be guided in the
    right direction. I replaced the video IC in this thing, had burnt PCB
    trace and shorted diode. The set would power up prior to replacing this
    IC. Now I don't have any voltage on flyback other than B+ back to
    collector of HOT. I don't think the horizontal oscillator is
    oscillating. I desoldered the base of the HOT, and injected a horzontal
    drive signal, and still got nothing from flyback. I strongly suspect I
    was sent the wrong replacement IC, but if I inject a known good drive
    signal, shouldn't the thing power up? Is there something else about
    this IC that would prevent a power up? Thanks for any insight. Again, I
    am a beginner.
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