via this auction
"Yamaha CS-60 Rare 1977 Vintage Analog Synthesizer.This is the most amazing synthesizer I’ve ever had and I hate to have to get rid of it.
This instrument is in really good condition due to the maintenance I’ve done to it over the years which Is
I Completely rebuilt the power supply and replaced every electrolytic capacitor in the instrument along with many other capacitor types which is close to 1000 capacitors. Also, I replaced all the CMOS chips and started replacing some of the voice card potentiometers. I documented all of the restoration done to the instrument and will give you that pictures and information, if you like.
There are a few things I haven’t got around to yet which are replace the pitch ribbon spring:100-200$ cost.
Replace IG 151 LFO chip for the ring modulator: 75-150$ cost and: replace the rest of the scratchy potentiometers on the voice boards 50-150$ cost but, the instrument works fine. The Only problem I ever have is it occasionally gets some static from a few bad potentiometers but after it warms up it’a fine.
Here is videos of made with the instrument." [posted here]
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