19-06-2020, 08:30 AM
The input jacks ground the signal when no lead is plugged in, so a simple check to isolate that part of the circuit for me would be
to pull valves V1 and V2, then switch on, after warm up is there still hum? Take it from there.
Eddie
to pull valves V1 and V2, then switch on, after warm up is there still hum? Take it from there.
Eddie







