YAMAHA CS40M SYNTHESIZER SN 1240

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via this auction

" This rare keyboard is in AMAZING clean condition inside and out. My tech of 34 years was shocked to see how well the synth looked inside as well as the cosmetic condition as we have together seen a LOT in the past 3 1/2 decades.
After sitting in storage for the past 10 years we went thru the entire unit top to bottom cleaning everything and solving the following problems:

He replaced several shorted power supply bypass capacitors, a couple of resistors in the power supply that were damaged as a result, and he replaced a comparator IC in the analog to digital (A/D) converter circuit and cleaned all of the controls as well. He then programmed in a few simple example patches and checked all the functions. Low serial# so we think from 1979.
The result is a fine vintage keyboard with
a VERY clean bill of health. Sounds and works FANTASTIC!

BONUS!!!! Now pictured is 2 Volume & Control pedals which will be included in this listing!! Comes also with a new power cord."