Home Forums GuitarPCB Build Support Apollo problem (solved) Reply To: Apollo problem (solved)



It was indeed the optocoupler just as the signal trace I did indicated so. The vendor sent me a replacement and the pedal works as designed. I have to say, this is by far the coolest tremolo pedal or tremolo I have ever used. It was worth the time to get this figured out. I would say for simple circuits, signal tracing is the way to go when diagnosing problems. Thank you for your patience and time.