I built a zero point a while ago and had some issues with it but put to the side for a while (4-6 months!) but now I would like to finnish it. I keep hearing a slight ticking that relates to the speed-knob when the mod switch is turned on. Any Idea's where I should be looking? so far the only thing I've done is switch IC5 but that didn't work.
Shuffle your wiring around. I had a problem with my Zeropoint mini with the proximity of the input/output wiring to the clock. Another option would be to shield them.