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#4
11-16-2006, 11:56 AM
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I had vertical issues with one of those RCA 18" hybrids-only replacing the orange drops (probably maroon) took care of the problem. In that case, with a vertical chassis, heat seemed to have killed them. I would agree though that 9 times out of 10 those caps are good. Also make sure the pots are good. I spent a good amount of time troubleshooting one set with a short verticle only to find that either the height or lin (can't recall) was burnt. It worked to a point but not fully.
__________________
Bryan 
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#6
11-16-2006, 02:21 PM
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Isnt there an tubular electrolytic in that circuit? No schematic in front of me right now, but I think it causes insufficient deflection if it's bad.
John
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#7
11-16-2006, 03:26 PM
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yep, bad orange drops do happen occasionally. Lots of times the zenith table b/w sets will have short vertical. Ive found it to be a bad (leaky) maroon drop .0068uF in the output circuit. Had this happen about 3 times already (different sets of course).
I lost vertical sweep in a CTC-16 I bought from Tim a few years back. that was caused by a shorted orange drop which in turn smoked the B+ dropping resistor to the vertical output plate. I can't remember exactly but it was something like a .1uF. Faulty mylars are indeed a rare occurance though.
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#9
11-16-2006, 06:33 PM
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Varistor. 1480v 15% 10ma. RCA # 112876
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#12
11-17-2006, 08:49 PM
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hmm. how can you determine the amount of hours on the chassis?
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#14
11-17-2006, 10:33 PM
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Oh. I see. I wasn't asking it as a smartass question BTW.
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Linear Mode
