SY22 problem/schematics

[>>>marjan<<<]

Hi all,

Friend of mine, Uros, memeber of this list has problems with his mail 
so he asked me to send this in his behalf.

He's got Yamaha SY22 recently but it has faulty key: H1 sends note
on and velocity but no note off. Pressing some other key finishes
it but not always the same key. Synth is otherwise in nice shape
and no external abuse visible.

Anyone familiar with this kind of problem with this kbd?

Also he's looking for the schematics for SY22.

Thanks,


marjan