Besides fixing broken keys, the technicians at Sequential Circuits routinely performed engineering prescribed functional tests on all Sequential Circuits instruments. A "Factory Functional" Test systematically checks every aspect of the instrument to assure that all electronics and features are operating reliably and within factory specifications prior to packaging any instrument for shipping. To assure operational performance and reliability, Wine Country ex-Sequential techs follow these same engineering prescribed procedures for any Sequential Circuits instrument sent for repair, restoration, or maintenance. Contact Wine Country to make your Prophet, or any Sequential Circuits instrument, operate at peak performance.
Eliminate that annoying HUMMMM!!! Install a Toroidal Transformer
Before * * * * * * * * After
Your Prophet-5 can easily be rigged for silent running by Wine Country.
Replace your old & loud transformer with a new silent toroidal and at the same get your Prophet-5 tuned-up, scaled, and ready to get to work. For more information call Wine Country at (408) 265-2008 or email us at Repairs@WineCountrySequential.com.
Prophet-5 MIDI kit $329
A Sequential™ MIDI kit is available from Wine Country for the Revision 3.2 or 3.3 Prophet-5 that offers MIDI IN and OUT jacks, with operation in OMNI & POLY Modes over 16 MIDI channels with program select & alternate release, plus response to incoming pitch wheel data in 3-ranges & current program MIDI data dumps. Instructions included. Estimate 2 to 3 hours for MIDI kit installation by a competent service technician. MIDI kits for the Rev 2, Rev 3.0, and Rev 3.1 are available from Kenton Electronics. MIDI kits are routinely installed into Prophet-5s by Wine Country Technicians.
The current Prophet-5 MIDI kit connects the MIDI PCB directly into the 28-pin socket on the CPU board. The MIDI PC board is secured with double-backed tape strips provided OR a few dabs of silicon adhesive. This eliminates the need for a 28-pin ribbon cable, and drilling holes for screws is NOT required. Pictured is the MIDI board installed into the CPU Board #3.
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Seen inside the pitch mod box are the two #R-207 pots & associated wheels. The white clip fastened to the bottom of the left bracket provides a Pitch Wheel Center Detent.
The J-wire keyboard is seen at the right of the pitch/mod box.
Power Supply Reliability Upgrade
The Prophet-5 power supply PC board #5 is at left. Common power supply failures can be almost always avoided if reliability modifications are properly installed between the power regulators and the power supply board #5. These modifications are routinely installed by Wine Country technicians.
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The power transformer is a heavy component. All Prophet-5 owners should confirm that their Prophet-5's power transformer is securely mounted to the bottom panel with 2 screws & nuts. A loose transformer can damage not only the transformer, but other components are well.
Prophet Owner's Comments
July 31, 2017 email from Roberto in Switzerland, new owner of Prophet 600 sn#4076..
"Received the Pro 600... It looks fantastic and it works perfect. THANK YOU VERY MUCH.
I’m a happy man ;-)
July 17, 2017 email from David in Arizona, the new owner of Prophet-5 sn#1406..
"I received my Prophet on Friday and spent hours with it over the weekend. I must say it is even better in person than I thought it would be. Such a beautiful instrument, even with the slight cosmetic flaws on my unit. I really love it. After wanting one for 30 years, it’s just amazing and to finally have one. It warmed up quickly and stayed perfectly in tune, no issues at all. I read the very well written manual from cover to cover and learned a lot reading about each patch. I wish modern synth manuals were that well written."
David J., AZ
October 2015 email from Gabe in California regarding the repair & restoration of his Prophet 600:
"just want to say thank you for an amazing job on my prophet 600! -gabe"
October 2014 email from Jamshied in New York regarding the repair & restoration of his Prophet-5 Rev 3.3:
"Received Prophet-5 #3326 yesterday. Everything checks out so far, and it sounds and feels great! Really like being reunited with an old friend. Thank you so much for your great work!
May 2014 email from Eli in Florida regarding the repair & restoration of his Prophet-5 Rev 3.3:
"I would just like to commend your company, this has been the quickest turn around, best communication and overall best service for synth repair I have experienced. I am very eager to have the finished product back at my studio! Thanks so much for an excellent customer experience :)
September 2010 email from Al in Missouri regarding the repair of his Prophet-5 Revision 2:
"Thanks for your service!!! I'm glad someone is still around with enough interest and skill to keep these great machines alive. Before I was happy just to own one, now I'll even be happier to own one that actually works.
July 2010 email from Mark in California regarding the repair of his Prophet-5 Revision 2:
".. thanks again for the fine work on the Rev2... if I pick-up another SC Anything that needs work, you folks will be the first ones I call.
March 2010 email from Dan regarding the repair of his Prophet-5 Revision 3.3 with MIDI:
"Thanks again for your help, renovation/repair and software revision update. I'll recommend WCS if anyone inquires....
2009 email from Gerry M. regarding his Prophet-5 Rev3.3 with MIDI that had been repaired & restored by Wine Country:
"Thanks again so much for your great work on my Prophet 5. It sounds, feels, and looks absolutely fantastic. The keyboard feels like a new keyboard, and everything is working perfectly. Much appreciated!!"
2009 email from Joe B. regarding his Prophet-5 Rev3.3 which was repaired, restored, and had a factory MIDI kit installed by Wine Country:
"THE MIDI IS amazing!!! The keys feel great...thanx for the screws....I am blown away with this thing."
Rev 2 vs. Rev3 -- Why does a Rev 3 exist? The Rev 3 Prophet-5 was developed by Sequential Circuits as a direct result of the documented unreliability of the Rev 2 Prophet-5.
2009 email from Pierre-Luc of Switzerland regarding his recently purchased Prophet-5 Rev3:
"My rev 2 sn. 437 went several times to repair. It had a big sound but I sold it when it was working. My rev 3 is much more reliable and I like the sound."
2007 email from Daniel regarding his Rev2 Prophet-5 sn 1114 after a series of unsuccessful repairs elsewhere:
"I'm just disappointed because the Prophet was perfectly (at least to my ears) in tune before the voice went out and now it's unusable in poly mode. I'm debating between a full restore, or selling it. Tough decisions."
June 2007 Vintage Synthe Explorer Forum
new Wine Country Prophet 600 owner with A440 tuning & pitch wheel questions
Sat Jun 23, 2007 3:52am
EDIT: Found the problem. The pitch wheel isn't properly centered. I turned the prophet on and off and I'm hitting middle A now. NOw the problem is, if I use the pitch wheel and bring it back to the center, the pitch will be flat. I have to bring up the wheel a touch to get it back in pitch.
How hard is this to fix?
Btw, the pitch wheel doesn't have any spring action. Is it supposed to be this way?
micahjonhughes and Maschinengeist were riight. The pitch wheel needed to be recenter using the Record + 3 parameter.
Just so you guys know, I actually received an email and phone call from David at Wine Country Sequential on Saturday, which is awesome considering they aren't open on Saturdays.
So overall, I'm very happy with my purchase and would definitely recommend Wine Country Sequential for anybody looking for a Sequential synth in great condition.
One question though, is there any way to detect which chips are about to fail? I'd like to maybe order some spare voice or filter chips.
Tue Jun 26, 2007 7:53 pm
Just for the record - P600's pitch wheel isn't spring-centered.
ORIGINAL Prophet Parts for Collectors
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ORIGINAL Sequential Circuits Model 851 factory program data cassette containing data for 120 factory programs available for $29.95 while supplies last.
An original Sequential Circuits Model 851 data cassette was included with every new Rev 3.3 Prophet-5, and is now available as memorabilia for collectors. If you just want sound program data for any Rev 3 Prophet-5, a cassette tape is available for $19.97 that includes the 3 original files of factory programs found on the Model 851, plus 2 additional files of 80 non-factory alternative programs. This sound program data will load into any Revision 3 Prophet-5, but is NOT compatible with a Revision 2 Prophet-5.
The fuse for the Prophet-5 and Pro One is installed into the back of the square Red fusecap, and the fusecap is then inserted into the square fuseholder. The fuse and Red fusecap remain slightly spring-loaded when properly inserted into the black square fuseholder. The ORIGINAL fuse holder includes a red cap. The fuse holder and red fuse cap are ONLY AVAILABLE AS A SET for $19.97.
Fuses for use with 115VAC and 230VAC are available for $4 each.