Yamaha CS80

Well, I´m pretty sure it´s not a voice card as it comes from all the voices. It must be a general problem. It leaks noise, some VCO signal and that high annoying tone that comes when the general brilliance is closed. It´s quite annoying cause it gets through the low base sounds hissing in the background....Could it be the PRA board?

--- In yamahacs80@yahoogroups.com, The Old Crow <oldcrow@...> wrote:
>
>    CS filters cannot self-oscillate; they are wired with external 
> feedback limiting on the resonance control VCAs inside the IG00156s.  
> You might be hearing chorus unit clock noise.  Or a noisy FET somewhere 
> leaking a VCO signal. My CS80s are noisy in this regard, probably due to 
> age more than anything.  --Crow
> 
> On 5/23/2013 3:14 PM, pyjamagroove wrote:
> > If I go to the panel mode (both channels) and turn all VCOS, noise and sine off, both VCF up -then I put overall brilliance and keyboard control brilliance up and press like 6 or more keys at the same time, I hear high sine sound and actually a little VCO in the background and some noise clipping while pressing those keys. I´ve noticed this playing presets like brass with all the brilliance up. Do you guys have the same effect or there is something wrong with my CS80?
>