Quote:
Originally Posted by Radiotronman
It's got obvious sync issues that I'll have to solve, but what is strange, is if I turn the volume all of the way down, the left side of the screen will get brighter, further over and the sync will somewhat stabilize. Any thoughts?
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Now this tells us something. Some sets used the audio output tube as part of the B+ voltage divider (instead of a dropping resistor they used a tube to put that energy to work). On sets with that form of stacked B+ if the audio output stage is miss-biased or otherwise not working correctly it will reduce B+ to other stages that it is the B+ dropper for. I recommend voltage checks in the audio out stage with the volume low and high...You may also want to scope the lower B+ rail that comes from the audio output cathode to see if it is not filtering well.