I'm not sure where to start. Yes I have signal when it's bypassed. When engaged I get no signal and the led is lit up. I have a multimeter but just don't know where to start. Any help would be appreciated
Do you have an audio probe? Do you have power going to your transistor? Check with a DMM. Silly question, but are your in/out jacks plugged in correctly? You'd be surprised how often I make that mistake.