[sdiy] Audio bleed-thru on a minimoog...

[greg montalbano]

At 11:03 AM 8/7/02 -0700, Gene wrote:
>God I love troubleshooting. It's a nice break from kids and work...
>......
>The Minimoog is fixed. The solution was De-Ox-It
>
>  the more traditional high-when-key-pressed gate signal. This signal
>is brought out to an edge connector pin, which goes through the wiring
>harness into the pitch/mod wheel assembly by the keyboard, and turned around
>at the connector back into the two envelope generators at their edge
>connector pins. I saw on the scope that the signal was being output properly
>into the wiring harness, but not making it back in to the other pins. A
>contact-cleaning at the jones connector and reassembly made things right.
>....
>- Gene

The very first thing I check with any malfunctioning electronic device is 
the power supply -- check it for output & consistency.
But THEN, I check "connectors" -- wiring harnesses, DIP headers, switching 
jacks, toggles, etc---- ANYTHING that isn't soldered or permanent.  Over 
the (ever increasing) years, I've repaired stereos & synths whose problems 
were caused by old, oxidized or bent switching jacks (amazing how they can 
louse up control & audio signals), mixers & synths with loose or oxidized 
DIP & IDE cable headers, and just about ANYTHING that has one of those 
cheesy "plastic printed ribbon" type connectors -- those bastids were MADE 
to fail.

Glad you found an answer;  VERY glad it was simple.

~GMM