Yamaha CS15D and IG00159

[Andrew Sharpe]

Hi,

My CS15D's VCA envelope has lost it's control over the Decay and 
Sustain. That is, the Decay slider does nothing, and the Sustain 
slider does nothing, but the level is constant. The Attack and 
Release sections work fine.

I have the service manual, and it tells me that all the VCA envelope 
controls wander into an IG00159. I'm afraid that I'm not going to be 
able to find one of those just lying around somewhere. Might anyone 
have some pointers about this?

Any help you can provide would be greatly appreciated.

Andrew Sharpe
asharpe at salinas.net
http://www.salinas.net/~asharpe