My dad's friend gave me a small stone a while back, because it had been in his basement when his house flooded. I've been working on removing the corrosion. I've also replaced the slide switch and battery connector, but it doesn't seem to have much depth, if any. I was wondering where I should start on the circuitboard to fix the pedal. The pedal is rather old, so should the electrolytics be replaced?

I would check all the parts with your meter and make sure there reading close to their values. Replacing the electrolytics is a good idea but keep the originals in a small baggy for resale value later.

let me know how it goes....

I used to own of those pedals but gave it away like a dummy

I checked two of the electrolytics. They were fine, but now, when the color switch is off, a whining can be heard. The potentiometer even causes the pitch to change. I think I might have shot something when I put it back together. The new switch had longer leads, so one of them touched the cable tip. I didn't have time last night to check what else might have caused the problems. I may have created a short when I soldered the second capacitor back in. Those things aside, I could hear a little bit of phase shifting. Unfortunately, that was when the pedal was off. Well, I'll check it tonight and see if I missed something obvious.

BTW, should I remove the transformer input? I think that might be causing some problems, and I haven't seen an 1/8th inch mono jack used for a transformer, ever.

are you speaking of the adapter plug? Alot of the old ones had a 1/8" plug

Yeah, that's it. I'm thinking about taking it out. The switch is causing pops (I think). I'm still at school, so I can't check what's causing the problem.

I hate how the pedal seems to get worse as I work on it.

Sounds like a grounding problem or you have adapter plug wired backwards. It's hard to say since I can't see it or hear it.

[Edited on 9/28/2006 by brian]