Hi , heath .
About the aftertouch problem , It will may sound easy. but have you checked the 8.5v rail supply on the keyboard ? It may have broken from lifting up and down the keyboard ---
yamahacs80@yahoogroups.com, "Heath Finnie" <heathfinnie@...> wrote:
>
> Thought I would update the list on my CS-80 work thats been going on. I had help in fixing some of these problems which is great since some of them to me were stumpers.
>
> Here is what has been done:
>
> Power supply rebuilt
> Ring Modulator envelope fixed (bad IG00159)
> Output hi/low switch rebuilt
> constant pitch/loss of pitch controls (bad trace on the BA board)
> Funky 3 would not sound (bad transistor on the BA board)
>
> Some things that are left to do and a bit of a mystery:
>
> No aftertouch. (The aftertouch worked when I got the synth but now I have none on any key on either channel which makes me think its something global. The voltages seem to be fine on the TKS board....)
>
> No voice 3 on channel 2, but ONLY in panel mode???? This seems like a weird issue...
>
> And last will be a full calibration.
>