via this auction
"Background on the product: It was purchased new by a Jr. High school in the 90's for use as a bass unit for the band. It came to our tech shop shortly after with a damaged membrane keyboard and split wood sides due to a basketball landing on the keyboard. Parts were too costly at the time so the unit was scrapped and sat on a shelf for the last 20 years. I recently decided to bring it to life so here is what has been done:
A retro fitted J-wire keyboard taken from a sound chaser 90's music system (pratt and reed J wire) with all new bushings and an original PCB from a pro one hand wired and soldered into place to maintain DIP socket connectivity from a ribbon cable. New plastic bushing and repair on AC cord. New fuse system. New Black Walnut Wood sides with 4 coats of urethane. New noise generator (hand picked from a bucket of them for the noisiest one). New Logo badges. lightly sanded and re painted bottom, and VCO calibration. It cosmetically looks awesome.What does not work is the arpeggiator/sequencer which uses an 8021 obsolete chip. I have not confirmed the chip is bad however. If that is important, a retrofit (and superior) sequencer with MIDI is available on eBay. Some pots are scratchy from the long years of sit, but it was always stored inside. Action on the keyboard is GREAT! Welcome back Pro-One for use once again!"
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