Yamaha CS80

Every CS-80 that I've repaired with aftertouch problems needed some of
the chips on the TKC board, TSB1 board, and/or TSB2 board replaced.  I 
usually just replace them all.  They're listed as boards 3, 4 and 5 on my 
chip list:

http://www.cs80.com/chiplist1.txt

  When replacing the TKC chips, use decoupled, turned-pin sockets (Mil-Max 
or equivalent).

Crow
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