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Starting on a Model 20
#9

Hello everyone. Slow but sure progress is being made on my Model 20. I finished making all my dogbones...twice!!! I wasn't happy with the quality of the final product the first time, so I rebuilt them all again. I like to think I'm a meticulous artisan...my wife and kids would just say I'm a--l! Ordered all of the caps and started making detailed drawings before I pull any bakelites out. Like I said earlier, I'm a bare-bones rookie at this. I do have a question though.. while most of the bypass caps are in bakelite cases, two are in what look like metal matchboxes. Was there a reason for this? I wasn't under the impression that caps had to be shielded. I couldn't find a tutorial on rebuilding these caps. Can you point me in the right direction, please? I ordered NTE mylar caps 630v for all the replacements. Are these OK? I've made a couple of observations on the chassis itself. It seems to have a previous repair at the power transformer. A black rubber wire comes from a small hole drilled in the fiber terminal board of the transformer and is soldered to the number 2 lug on the BC resistor. The BC resistor must have been running hot. It melted the pitch in the filter can down into the chassis underside, and glued the can in place rather securely. Would not budge when I took out the screws to inspect it. (Reference earlier thread regarding Murphy's Law!) By the way Ron, are your ears burning? I've always prided myself as being barely above rotory phone friendly. If I ever want to post some pictures in this thread I'll have to get a lot more computer savvy. Photo 101 and probably alot of colorful metaphors here in come! And here I thought computers would just be a passing fad like televisions! As always, thanks for the help and take care. Gary

"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan


Messages In This Thread
Starting on a Model 20 - by GarySP - 01-17-2013, 04:10 PM
RE: Starting on a Model 20 - by TA Forbes - 01-18-2013, 01:38 AM
RE: Starting on a Model 20 - by GarySP - 01-18-2013, 09:23 AM
RE: Starting on a Model 20 - by Ron Ramirez - 01-18-2013, 12:54 PM
RE: Starting on a Model 20 - by GarySP - 01-18-2013, 02:46 PM
RE: Starting on a Model 20 - by TA Forbes - 01-18-2013, 09:35 PM
RE: Starting on a Model 20 - by GarySP - 01-20-2013, 10:11 PM
RE: Starting on a Model 20 - by GarySP - 01-21-2013, 12:07 PM
RE: Starting on a Model 20 - by GarySP - 01-24-2013, 10:31 PM
RE: Starting on a Model 20 - by TA Forbes - 01-25-2013, 12:48 AM
RE: Starting on a Model 20 - by Joe - 01-26-2013, 11:53 AM
RE: Starting on a Model 20 - by GarySP - 01-29-2013, 11:38 AM



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