Ok, thanks a lot for the help .

I got this answer on another forum “ What you describe sounds like the filter is stuck on self resonance, which is probably to do with the circuit under the resonance pot. I don't think that part is voltage controlled, so it may be the pot itself that needs replacing.” Does this sound right ? Thanks...

Hi there ,

My Voyager old school seems to be stuck in a mode where the cutoff is acting as a pitch wheel and won’t change .

Is it just a setting I’m stuck on ? Or could be fault Ic ?

Thanks ,

Brett