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10L43 Predicta no hv
I am having trouble with a recapped 10L43 chassis. I should tell you that while I have done a good bit of basic tube repairs...my advanced knowledge of reading waveforms, injecting signals and such is very limited to say the least. I have restored a couple of Admiral combo units but they were just recapping and basic alignment issues. I have met my challenge with this Predicta. Okay.I am at somewhat of a loss to explain the lack of my -45v at pin 5 of the 6dq6. Can someone tell me where that comes from. Is it via the 6cg7, pin6? The K7 netork has been replaced. I have a schematic but am at a dead end here. B+ voltages are good(maybe 10% high), vot, flyback have metered good, and at one point I actually had a modulated raster with good audio though some vertical lin needed tweaking. I have seen Bob Andersons and DaveWM's videos and actually have enough equipment to inject hot and vot signals if I have to. I have never done this before but dont mind learning from the experts out there. FYI I have rechecked the tubes and the crt tests near new....thanks in advance for any support you can give me. Sorry I should have given you this: pin 5 @ 6dq6 measures +6v, pin 6 @ 6cg7 measures 204v.
Last edited by whatadish; 02-26-2015 at 08:16 AM.
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