Quote:
Originally Posted by vortalexfan
OK so I powered up the TV with R54 and R56 tied together and C3B out of the picture and the voltage went up to 145V (still down a bit from where it should be but not as much, the voltage I think is still getting lost after C50 somehow because the voltage before C50 is 145V and after C50 its becomes a negative voltage that is in the 10v range, and then from there the voltages at pins 5 and 6 of the 5BQ5 output tube become basically non-existant.
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Unfortunately I can't follow what you're doing there. R54 being 390k cannot pass the kind current that you have being drawn through the 475 ohm( R56). The fact that B+ came up that much when you disconnected C3B is a strong clue you'll find more of your issue very close to that same area. Is R56 still in fact measuring 470 ohms, or has it been overheated and drifted much higher? You may get another clue if you temporarily disconnect either the blue or red leads of the output transformer, one lead at a time, while monitoring the voltage at the left end of R56. Once all loads are disconnected B+ should measure the same between both ends of R56 to ground. No load equals no voltage drop, so your goal here is disconnecting current paths until you find where the higher than normal draw is coming from. When you say you have no voltage on pins 5 or 6 of the 5BQ5 that strongly indicates a short some place before those points.