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Green Bean Mosquito

Started by insomniac2295, June 07, 2012, 09:29:57 PM

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insomniac2295

So, I built a friend a green bean. I just swapped the diodes in it. Originally I had all germanium diodes, everything worked fine. I swaped them for BAT41s for D4 & D5, kept geraniums for D3 & D2, and put a 1N914 in for D1. Now there is a high pitched buzz/hum/ringing that resembles the buzz of a mosquito. It worsens when I turn the tone up and flick the bright switch on. I can stop the noise by touching my guitar strings or by touching one of the pots on the pedal. This sounds like a grounding issue to me. Only trouble is, I don't know how to approach finding the source of the problem.
One note: I mangled up the solder pads for the cathode of D1. It's possible that it is not properly soldered to the board.

jkokura

Yes, that solder joint might be the issue.

Jacob
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