[rfeenstra]

Selenium rectifier. CR100 on the schematic Looks like the right radio has a silicone diode jumpered across. The schematic shows a 60 ohm resistor in series with the rectifier. Is that the resistor you are referring to?

Selenium rectifiers are problematic and should be replaced with a silicone diode of proper voltage rating. The output voltage will be higher so an additional dropping resistor of appropriate values should be added to bring the voltage down to the correct value. I've never worked on one of these radios but have had to replace selenium rectifiers. I hear they smell pretty bad when they go!