BigTom wrote:
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?
You've got a TV with a chopper? I've never seen such a thing.
Maybe you mean something in the horizontal output section?
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