A failure in any one of these ICs will result in a bad voice.
These are socketed parts so replacement requires no soldering.
Used Braemer micro-cassettes $20 each
Braemer micro cassettes are for Prophet-10 tape drive mounted on left panel.
Used Exatron stringy cassettes $15 each
Exatron Stringy Tape Drives are mounted in the front under the Sequencer.
The Prophet-10 Operating System consists of 3 ROMs. OS Version 4.0 is for Prophet-10s with the front mounted Exatron tape drive, Version 5.0 is for Prophet-10s with the side mounted Braemer tape drive, and Version 6.1 is for all Prophet-10s with MIDI installed. A MIDI kit installation will permanently disable access to the Exatron tape drive and sequencer, but the Braemer tape drive and sequencer will continue to operate with MIDI installed. The 3 socketed MIDI OS ROMs are labeled as 0, 1, and 2.. and can be seen in the adjacent picture. The MIDI ROMs are labeled 0TEN6.1, 1TEN6.1, and 2TEN6.1
Prophet-10 CPU board with 3-chip set Operating System.
ProphetŪ10 v6.1 OS ROMs $98
Version 6.1 Operating System is ONLY for a Prophet-10 with MIDI installed.
Non-MIDI version OS v3.0, v4.0, v5.0 remain available for $79 each.
The Prophet-10 Diagnostics with basic instructions included is no longer available. The 2-chip Diagnostics ROM set could install factory programs into memory, and work in any Prophet-10 regardless of tape drive type, MIDI or no MIDI. The 2 ROMs are installed into the OS socket positions 0 and 1, & position 2 remains empty. The ENABLE/DISABLE switch on the back panel must be set to the ENABLE position in order to run all diagnostics routines AND install factory programs into memory.
Used Original ProphetŪ10 parts
#I-417/LM317K for the Prophet-10 variable power regulator $25
#I-417/LM317K variable power regulator $25
Original Transformer & Heatsink $45
Original Prophet-10 Transformer & Heatsink
****Prophet-10 Corcom Power Jack*** Fuse & Voltage Select Card included **$35**
Used Original Prophet-10 Corcom power jack
Housing, Fuse, & Voltage Select Card
Unpopulated non-functional Original Computer Board#3 for ProphetŪ10 $25
Prophet-10 CPU PC board #3 AS-IS for SPARE PARTS.
power switch $15 ** 1/4" jack $15
1/4" jack/cable assembly $22
Right & Left Top Panel Hinge Locks $35
Email us for current availability ** Shipping is Additional
Power switch * Audio Jack
1/4" jack & cable assembly.
Top Panel Hinge Locks.
<< PDFs of Original Sequential Circuits Prophet-10 Spec Sheets from 1980
Last Update: March 20, 2025
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