12-31-2019, 09:55 PM
More likely than not they are all leaky. Number 33 is audio coupling, if leaky, can drive the output hard and burn out OP transformer or the field coil as can the tone control caps. Number 20 if shorted, can also burn out the field. Number 49 if shorted can put a dangerous current on the chassis, replace with .01 safety cap. For safety, reliability and performance it is best the just replace them all. While you are at it check all the resisters, some have probably drifted high.
Steve
Steve
M R Radios C M Tubes
