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Vintage Synth Repair

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Re: [vintagesynthrepair] Micromoog LFO

2013-05-23 by Mike Kearney

Hi again Aron,

Here's another possibility, although less likely. You didn't say if the Mod wheel has any effect. The output of the Mod wheel goes through a 'normally closed' contact built in to the 3/16" Mod jack. If that contact isn't closed (dirty, oxidized, bent, wrong plug inserted) the Mod wheel CV output never returns to the main board, and there will be no Mod.




On 5/22/2013 8:59 PM, stompboxaron wrote:

Got my Micromoog working (it took 3 years!).

Now the LFO doesn't work.

Bend, Noise works. Everything else Square Wave, Triangle, S&H AUTO etc.... only produce a different in pitch. The RATE knob has no effect.. The routing switches work.

For the people that have worked on the Micromoog, does this sound like a common problem?

Thanks in advance.

Aron


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