12-21-2012, 02:39 PM
I have a Model 20 Deluxe I bought around 1988 at an Antique mall and began replacing most all of the caps and resistors and a fair amount of the wiring. I didn't know how to replace the filter caps in the can back then so I added a terminal block under the chassis and added the four caps there and disconnected the wiring from the can to the circuit to those mounted on the terminal block.
Lately after learning how easy it was to remove this can and add either electrolytics or standard caps, which I opted for the latter, I began chasing out the wiring from those caps to the transformer and filter choke and discovered the factory wiring had not agreed with the schematic. The schematic shows terminal point 11 on the transformer going only to one side of the filament on the rectifier tube. This radio is wired with point 10 going to one side of the filament. In other words, the technicians reversed points 10 and 11 on the transformer to wire to the filament. So, point 11 on the radio actually goes to one side of the filament of the 80 tube and then to the filter choke and the two filter caps. Does that really make a difference or should I rewire per the schematic?
Lately after learning how easy it was to remove this can and add either electrolytics or standard caps, which I opted for the latter, I began chasing out the wiring from those caps to the transformer and filter choke and discovered the factory wiring had not agreed with the schematic. The schematic shows terminal point 11 on the transformer going only to one side of the filament on the rectifier tube. This radio is wired with point 10 going to one side of the filament. In other words, the technicians reversed points 10 and 11 on the transformer to wire to the filament. So, point 11 on the radio actually goes to one side of the filament of the 80 tube and then to the filter choke and the two filter caps. Does that really make a difference or should I rewire per the schematic?
