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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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hissing chopper
Panasonic tc-63R50N color tv
HOT ok. 106v at Collector. no HV no heater. sound ok. can change channels + adjust volume. this set has a separate p/s board using an STR51213. tested resistance on this ic, no pins shorted. the chopper is making a squealing noise while turned on. done the usual, esr caps, checked all the big resistors, transistors. what should i look at next? |
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