SY22 problem/schematics

[WeAreAs1 at aol.com]

In a message dated 12/11/00 6:37:56 AM, urekar.m at EUnet.yu writes:

<< 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. >>

Hello Marjan,

He needs to clean the keyboard contacts.  Carefully.  You can verify this by 
trying to play the SY22 from an external MIDI controller.  If the problem 
goes away when using and external MIDI controller, then it's the key contacts.

Michael Bacich