Theremin troubleshooting

Posted: 2/11/2007 10:06:42 PM

Joined: 2/11/2007

Hi all.

I just finished putting together a Moog Etherwave kit. It is my first Theremin.

I was of course quite excited to play it when I got done putting everything together, but when I plugged it in, there was a problem. Instead of a tone, all I get is a series of pops. They are grouped two at a time, are steadily rhythmic, and appear at the same volume and intensity regardless of knob position or proximity to the antennae.

I have triple-checked my wiring and as far as I can tell, everything is fine. I don't see any loops or shorts, and everything seems to be connected to the proper places.

I have never done this, or anything remotely like it, before, and I honestly have no idea what the problem might be.

Any ideas? I can make a recording of the noises if that might help.

Thank you.
Posted: 2/12/2007 12:58:11 AM

Joined: 2/11/2007

Here is an audio clip of the problem.

Any help is very much appeciated.
Posted: 2/12/2007 1:27:29 AM

Joined: 2/11/2007

I fixed the problem. Two parts on the PCB were shorting each other. Seems to work fine now.
Posted: 2/17/2007 4:31:23 PM

From: sunnyvale california

Joined: 1/28/2007


Often problems on circuit boards are like this, something got bumped and something broke, 2 things shorted, etc.

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