• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Loud Popping Dynaco ST-70

d1983

Member
2007-03-19 6:35 pm
I'm getting some loud popping in both channels in my Dynaco ST-70. I'm figuring it's in the power supply, maybe arcing in the caps or the diode? Wondering if any of you have had this problem before I go spending all this money to replace parts.