[sdiy] OT micromoog keyboard & mono/poly filter problems

[Mesa237 at aol.com]

Also try cleaning key contacts.  i believe it was a bus bar type mechanism; 
though it
is unlikely that all notes would be affected if some of the surface area was 
dirty.  i would look at some of the opamps in the keyboard cuicit; they are 
more likely to go out than the discrete components around them.  just an 
idea, though.

i think i have the schematics somewhere around my apartment; i'll try to find 
them tonight and give more specific advice.

-paul