Working vintage HP "calculator". Unfortunately I do not have any modules, but an original HP-branded cloth cover is included. All keys tested and working. Very nice cosmetic condition.
Cash pickup in Petaluma. Open to offers, as well as trades for broken musical equipment or other niche electronics (I am not usually interested in anything working). I buy broken synths! I fix broken synths! I also repair and re-grease KitchenAid stand mixers. Let me know if yours is dripping oil.
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: