I got a nice shaped CS-15 which acts strangely... No matter how I set it, no of the envelopes make any changes in sound, and it acts like it is in "hold" status all the time (no attack, full sustain and no release, just playing endlessly). All other functions work and all keys respond. Where would you recommend to start ?
Message
Yamaha CS-15: no envelopes....
2008-08-02 by gil_we