Vintage Synth Repair

Is the sound coming through the cable (electronically), or directly off 
the unit (physical sound)?
If it comes right off the unit, it could be a component in the power 
supply that should be glued down, but is occilating.

> My Rolans RS-09 makes a high pitched wine like a TV (well maybe not as
> high as that but similar) when not being played..it's not very loud
> and it's still useable but it's very annoying. I guess it's about as
> loud as  the hiss. It's sounds like a high pitched organ tone stuck
> on. It's not supposed to do this right? Any info on fixing it?


tw.  :)

"Those great moments come when musicians are playing together..."
(Bob Moog)