Hi all.
It's been a while since I gave a status on my repair/restoration. My
CS-80 is now 100% working!
I just tuned it this evening. I don't know why people think it's such
a huge deal. Admittedly, mine was pretty close to start with, but the
main tuning procedure (Tuning from
http://personal.inet.fi/private/matador/cs-80_adjustment_procedure.html)only took about an hour. It's so in tune it almost sounds digital :^)
I also did the power-supply adjustments. One thing I did, that I had
read somewhere, was put a heater in the room and cranked up the
temperature to about 85F. This is supposed to make the ambient
temperature around the voice cards closer to what it would be with the
instrument all closed up. The tuning has always been good and solid
on this unit. It's serial # 1646, which is one of the highest ones
I've ever seen. It has the last version of the VCO chips, which
didn't require any temperature compensation mods.
While it's opened up, I'll go through all the other adjustment
procedures. I've already tweaked all the switch contacts to get the
note on/off and velocity sensing even. I even took out all the keys
and cleaned the key tops. All aftertouch sensors are working great, too.
Oh, and after searching for months, I bought an original CS-80 stand
from a guy whose CS-80 wasn't working. Now if I could just find the
Plexiglass music rest. My attempt to make one didn't work out:
cutting Plexiglass (especially clear) is harder than I thought.
I hope to screw the case shut, for the last time, within a week
(unless I find a Kenton kit really cheap!).
I'll post some more pictures soon, too.
Thanks for all the help I've gotten from many people in this group!
David