VCF problem

[Byron G. Jacquot]

>    So I am playing with my synthesizer tonight and feed white noise
>through the VCF (blacet final filtre) and its working fine one min and
>the next min the resonance stops working? Evyerthing else seems to be
>working any suggestions?

A couple of initial guesses:

1> Check the solder connections to the resonance pot.

2> Check to make sure you don't have a flaky patch cable.

3> Check for other intermittent conections, like the panel jacks, the power
supplies, etc.  Does the resonance seem to be dependent on any other
controls, etc?