04-01-2017, 01:41 AM
The speaker filed coil is in series with the negative leg of the power supply, so that would help preserve it somewhat. The tone control is between B+ and chassis ground, better watch that capacitor if it shorts it will destroy the tone control pot. Is there such a thing as a .03 uf 630 vdc safety capacitor that could be used in that spot?
I'm not surprised about the filter caps being connected incorrectly, but in cases such as these it's usually the negative side that confuses them such as connecting both negative to the chassis and wondering why the set has a roaring hum. Potted condenser cans are sort of a hallmark of Majestic radios, and many others of that era, I don't know what the appeal was, it could have been a perceived ease of assembly, or maybe it was just the fad among engineers at the time, who knows? But it's sure a pain in the bottom now, especially the ones with no terminal board on the bottom and just a bundle of wires sticking out of the tar.
Regards
Arran
I'm not surprised about the filter caps being connected incorrectly, but in cases such as these it's usually the negative side that confuses them such as connecting both negative to the chassis and wondering why the set has a roaring hum. Potted condenser cans are sort of a hallmark of Majestic radios, and many others of that era, I don't know what the appeal was, it could have been a perceived ease of assembly, or maybe it was just the fad among engineers at the time, who knows? But it's sure a pain in the bottom now, especially the ones with no terminal board on the bottom and just a bundle of wires sticking out of the tar.
Regards
Arran
