This Proteus has had its RAM backup battery replaced, and I reloaded the factory presets after changing the battery. All keys and buttons work great. The jog wheel has some scratching, but very nice cosmetic condition otherwise. Funky 1990s synth!
Cash pickup in Petaluma. Open to offers, as well as trades for broken musical equipment or other electronics (I am not usually interested in anything working). I am frequently down in Oakland/Berkeley/Emeryville and SF so I may be able to meet you near I-680. Possible to deliver elsewhere in the Bay Area for a small additional fee. I buy broken synths! I fix broken synths!
I also repair many other types of electronic equipment; stereos and electronic musical instruments, keyboards, guitar and bass amplifiers, effects pedals, and recording equipment, pinball machines, and jukeboxes. I do all types of circuit board-level component repair; new electrolytic capacitors, repair diagnosis, upgrades, and full electronic restoration of vintage electronics. Check out my work: