i just fixed my univibe after it got damaged in a flood 10 years ago and only would run at half speed. I replaced every capacitor, several resistors, transistors, chips, etc., nothing worked. Finally, the last thing i decided to check was the optocoupler, and guess what... That was the problem, sheesh.
Anyway, now it's running great again but the max speed is cut in half when the expression pedal is plugged in. Everything works fine and it changes the speed, but it's not nearly as fast as it is without the pedal plugged in. I see you mentioned above about modding the pedal, is this a known thing where the speed is slower when it's plugged in?
Anyway, now it's running great again but the max speed is cut in half when the expression pedal is plugged in. Everything works fine and it changes the speed, but it's not nearly as fast as it is without the pedal plugged in. I see you mentioned above about modding the pedal, is this a known thing where the speed is slower when it's plugged in?