Yamaha CS80

It sounds like either the actual contact is stuck in the ON position within the switch, one of the IG00157 ICs on the tone selector board has gone wrong or a short somewhere in the circuit for that switch. If either of the first two you'll need to source new components from somewhere, either from a broken CS-80 or one of the E-series electone organs with the same illuminated preset switches. I believe they also use the same preset ICs.

--- In yamahacs80@yahoogroups.com, "theblackbutterflygang" <theblackbutterflygang@...> wrote:
>
> Hi Folks,
> 
> I'm the proud owner of a CS80. She is in lovely condition but has developed a quirk and I could use a little in fixing it. The panel 2 button is "stuck" on. The button moves freely but the presets are engaged only when held down. Any help here would be wonderful. 
> 
> thanks,
> Ian
>