Yamaha CS80

Hello

I'd like to introduce myself. My name ist Florian Anwander. I live in 
Munich, Germany, and I am doing synth repair as side job. I work most 
times on Roland gear, but I did two restorations of CS-60, some repair 
on a CS-50 and now I have to tune and repair a CS-80.

As first offer to the list, I'd like to share a simple helper trick I 
introduced to the CS-60s. I add a LED, that shows the active voice.
http://fa.utfs.org/diy/yamaha_cs60/index.html
This makes the tuning much easier.

I will have a question regarding the CS-80 preset selection too, but I 
will do that in another mail.

best regards
Florian