RCA Console Protection/DC Centering Mod

[KilgoreCemetery]

I've been fixing up an RCA MHT67W receiver (Amp chassis: RS-209c). It has germanium output transistors, about 100mV of DC at one speaker terminal (only about 20mV at the other), and no way to adjust it. Is there an easy way to add a trim pot or should I just add an output coupling capacitor, or both?

I've already replaced all of the electrolytic capacitors. The power supply voltages all look good and I get clean signal to the speaker terminals with dummy loads connected.

 

[crutschow]

100mV into an 8 ohm speaker generates only about 13mA of current, so that should not be a problem.