06-26-2014, 06:06 PM
You could, with the chassis unplugged!!! pull out the pushpull tubes and using either an audio oscillator capable of 10V or so, or isolation transformer with variac, couple the output starting from few volts between anode pins.
If you hear the sound or a buzz - you are good. Feeding the output to centertap and each end one at a time, if you hear the same volume sound/buzz you are good.
If you hear the sound or a buzz - you are good. Feeding the output to centertap and each end one at a time, if you hear the same volume sound/buzz you are good.
