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#1
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Well...I had a few minutes to get under the set tonight. I realized I forgot to mention one more problem. I have a vertical deflection problem also. Most of the time when I power the set on the raster is very compressed vertically. I can get it to come back by wiggling a cap on the vertical osc tube. I'm sure I can find the issue there and fix it.
I was able to find the source of the "zipper" effect in the video. I have a bad cap in the horizontal oscillator. The cap in question is an 88pf cap. I had a couple of caps in parallel with a clip lead in the circuit as a temporary replacement. When I took the clip lead out and soldered the caps in place the problem disappeared. I do need a correct capacitor to replace the defective one. Does anyone have any spares?
__________________
John |
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#2
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Hey, that sounds like progress!
I would definitely encourage you to forge ahead and finish the TV. Gotta love that swiveling peekaboo screen. I know what it's like to get bogged down in a big project. I've been tinkering with a Dumont RA-102 for months now -- far longer than it would take if I had worked on it regularly rather than sulking or looking for excuses (the holidays! the cold weather! a butterfly flapping its wings in Asia!). So, do what I say and not what I do: you'll feel great when you're all done ![]() Phil Nelson Phil's Old Radios http://antiqueradio.org/index.html |
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#3
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I'd encourage you to finish this hard to find set too. I usually work on 2-3 sets at the same time, so when I get frustrated with one I pick up on another set already started. My dad repaired sets for years and he's often said, sometimes you've gotta stop and take a break or you'll drive yourself nuts.
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