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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Dead Toshiba
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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