Sequential Circuits- Prophet 5 Rev2

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via this auction

"The unit is 100% functional after a complete burn time . It's as stable and in tune as a serviced rev3 ;)

Currently set for 220v opeartion, but can be set to 110v with the voltage selector.


Great cosmetical condition, with a few age wear on the knobs, wooden cabinets, and mostly , the silk screen is a bit damaged / partially erased ( see pics : filter section , "record", master tune, below the preset switches) . Beside that, everything is very clean !

Please, note that the outside screws have not been put back yet for the photos :)

Work done on this Prophet 5 rev2:
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- New power cable
- New AC switch (identical to the original one)
- New custom made power supply ( silent torroidal transformer + DC board), way less heat produced !
- Modern RAM/ROM module installed ( more reliable than 2708 EPROMs & 6508 RAM chips ..)
- New battery (and import of factory patches) -
Change of all tantalum capacitors
- Change of all polystyrene capacitors ( S/H sections)
- New Z-80 CPU installed
- Change of a dead LM339 (cassette section)
- Burnt resistor changed by a new one
- Change of all CMOS switches and opAmps S/H section
- Change of Init Freq trimmers for each VCO of the 5 voices (replacement by multiturns trimmers)
- Change of matched resistors on the voiceboard
- Complete calibration
- New "Prophet 5" metal plate on the back
- Complete disassembly and restoration of the keyboard (new bushings, Bus bar and J-Wire deoxidation, complete cleaning of the keys and the keybed)
- New jack output
- Change of all the potentiometers with new custom-made parts

- Not done by us, but worth mentionning :
This rev2 have a "dead-band" installed mod for the pitch bend, which helps a lot for a consistant tune . A kenton MIDI kit was previously added in the past & removed since, MIDI sockets are still here on the back, however, they are not connected to anything as the Kenton kit is not here anymore."