Need help trouble shooting a Tremolo build

Frequent questions about dead or faulty pedals. Whether you repair, mod or build pedals, debugging is important. Threads about general debugging problems irrespective of the circuit involved...

Need help trouble shooting a Tremolo build

Postby ejendres » 05 Feb 2013, 05:42

I built a Swamp Thang tremolo per this layout and the linked schematic.

http://tagboardeffects.blogspot.ca/2012 ... thang.html

When I use it it seems to boost my signal as well and add tremolo. The tremolo seems to be either drastic or extremely subtle with not really any points in between. I can't say that with 100% percent certainty as even direct into my laptop with no volume my guitar was bothering my sleeping roommate (sigh). I can do a proper audio evaluation tomorrow.

I do know something is wrong though, as the LED behaves strangely. It get significantly brighter as the speed knob is increased. And seems to be blinking fastest mid-sweep as opposed to at the end of sweep. It also goes nearly dark when I flip the speed switch.

http://youtu.be/XGgHmCOjsN0

Any clues?
ejendres
 
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