via this auction
"An incredibly clean SCI Prophet 5 Rev 3.3 with factory MIDI (serial #5874). I am the second owner and it has always lived in my clean, smoke free studio. The original owner had it regularly maintained by Wine Country Productions synth service in the Bay Area. It has never been shipped. When not in use, it lives in a flight case. 
It has recently been serviced and given a clean bill of health by East Bay Area Prophet 5 specialist Greg Montalbano (Analog Synth Repair). I recently replaced the bushings. I told Greg to replace anything that would have any issues down the line, even if they weren't broken now. Over the years he has replaced the tantalum capacitors and any problematic IC's. This last round (Aug. 10th 2020) I had him clean the bus bars and J-wire key contacts, tune and calibrate. He replaced the power supply with a much better performing and cooler operating version. He told me "It's the best it will ever be".Even though I'm selling it, I decided to have him upgrade the firmware to V10.6. I wish I had know about this sooner. Some of my favorite new features:
Sysex Dump
1 and 2 voice limiting while in Unison Mode
Unison Detune
Latch Mode
LED Voice Indication
All these can be disabled, and no there are no visible modifications to the synth. I will include the printed manual that Greg gave me.
I have a hard time listing anything as "Mint", but this thing is incredibly clean. There are virtually no blemishes other than stand rash on the bottom. I was so bummed out when I realized I had scratched it. I was planning on repainting it eventually, but honestly, you'll never see it anyway. From the photos, you may notice what looks like imperfections, in most cases it's just dust. I tried my best to take clean photos. If you want any additional photos of anything questionable, I can send you more.
Important: One thing to note, is that the J-wire key contact design is not a good one. Prophets like to be played. If they aren't regularly used, then the key contacts will occasionally begin to double trigger. It's a know issue and just playing the key a few times will usually remedy this. It's a good idea for any owner to know how to clean the contacts. Synthchaser has some great YouTube videos on maintenance. It's not difficult.
Included are the original cassette tapes with the original factory and Rev 3 programs. Also, the original operation and technical manuals. Also, the new firmware data sheet explaining the new features."
