via this auction
"Roland System-100 Model 104 For Sale. Meticulously overhauled by perfectionists, and working perfectly. This unit was cleaned inside and out. Potentiometers and switches were all cleaned. All power supply capacitors were replaced as a preventative measure so this unit will hopefully outlast others you may find. The power cord was replaced with a new one. Ready to play. If it doesn't sell soon, we will probably keep it."
