Oberheim SEM - 1975 // Restored by VS&C

via this listing

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Another Polymoog Lives!! #Polymoog #synthesizers #synthrestore

video upload by synthpro

"This polymoog came to me all the way from British Columbia for a restore. This unit had not worked since 1991 but she sings now. I will never get tired of the sounds of this synthesizer. This was the synthesizer that got me into synthesizers and electronics.

Off Topic but I have been playing a game I got for Christmas called, 'Tunic' and the soundtrack reminds me a lot of the polymoog in areas."

Vintage Moog Modular Synthesizer Repair - Synthchaser #167

video upload by Synthchaser

"In this video I troubleshoot a dead vintage Moog Modular Model 12 and bring it back to life with a 3 cent part!"

Crumar Spirit Service And Demo (by synthpro)

video upload by synthpro

"Hey guys,
In this video I show the internal workings of the Crumar Spirit as well as give a complete breakdown demo of what this synth offers.

Special thanks to the Bob Moog Foundation for the opportunity to work on this synthesizer and to all of you who watch my videos.

Sincerely,
Jareth"

ROLAND JUPITER 6 DEMO

video upload by Synth Tailor Electronics

"Here is a full demo on the Roland Jupiter 6 Polyphonic synthesizer. This unit belongs to Thane Evans, and it over-went a pretty major surgery to get it back to good health. History on the Jupiter 6:
Work done on this Jupiter 6:
-Main issues found were CPU locking up/causing intermittent failures when doing normal operations (moving sliders/random glitchy lights)
-Unit wouldn't accept the Cassette factory presets wav file upload, and would cause unit to crash/freeze.
-Battery Replacement + Socket
-Replaced Corrupt RAM chip (TC5517APL)
-Replaced heavily corroded/faulty Slide Potentiometers/Pots on both Panel boards. Unit feels great now and doesn't jump around the values causing lockups on the CPU.
-Replaced electrolytic capacitors that were out of spec/leaking on both voice boards. (x71 total throughout entire synth)
-Rebuilt Power Supply, hit cold solder joints on connectors and voltage regulators, through out entire synth
-Full Calibration to factory specs, tuning and D/A calibrations
-Upgraded Firmware to latest V6 firmware (previous firmware/eprom was V2)
-Burned 2732A Eprom and installed factory presets
-Hit cold/cracked solder joints throughout all connectors for better reliability in future
-Burned in unit for 48 hours, tested all functions-sounds great now!"

video upload by foleytronics fx repair

"...and Mark's Lexicon 300 is now a 300L. Also on the docket in today's demo is Michael's recapped and OLEDed Roland D-550 & PG-1000 programmer, Kelly's Moog Source with new membrane panel and an honorable mention of Ramble's Oberheim Matrix-12 acting as a MIDI board for the Roland."

Moog MG-1 (RadioShack Synthesizer) Restored by Synth Tailor Electronics

video upload by Synth Tailor Electronics

ARP 2813 Odyssey MKII Duophonic Synthesizer SN 1261

Note: Auction links are affiliate links for which the site may be compensated.

via this listing

"Mint/Collectors grade ARP Odyssey II for sale! Cosmetics are really great, and hard to find an example like this that in Todays market. This unit was fully overhauled by my repair shop Synth Tailor Electronics LLC in Columbus, Ohio!
Work/Restorations performed:

-All New Bourns slide pots (with thick gold swage pins, unlike most other replacement sliders on the market)

-Rebuilt PSU

-All Tantalums Replaced with new

-Pratt Read Keybed rebuilt, new Bushings

-Full Calibration and Tuning

Video comes with my standard one year warranty (visit my website for more details)

Visit synthtailorelectronics.com for repairs and restorations on vintage synthesizers, drum machines, outboard gear, and tape machines!"

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Robert's Memorymoog Plus Demo (by synthpro)

video upload by synthpro

"This is a video going over a very nice Memorymoog Plus I restored for Robert. This unit had a few failures but went on and gave it a proper restoration so it will hold up for another 40 years.

Thanks for watching!

Sincerely,
Jareth"

What Is All That Stuff Inside A Polymoog (by synthpro)

video upload by synthpro

"This is a video I felt it was time to make going over the polymoog more in depth technically to go hand in hand with @AlexBallMusic's post on the Polymoog synthesizer."

See Alex Ball's Polymoog video here: That Gary Numan Synth. Update:

Dillan's Polymoog 203a Demo (by synthpro)



SN 1244

Sequential Circuits Pro One Synthesizer + Drumtraks DEMO for Trevor

video upload by Synth Tailor Electronics

"Here's a Sequential Circuits Pro One that was overhauled and upgraded by Synth Tailor Electronics in Columbus, Ohio. Visit our website to get in touch for repairing your vintage synths, drum machines, tape machines, and outboard gear. We service vintage items made before 1991!

Restorations done:
-Installed Fatar TP/9S keybed from TechsMechs Vintage Synth (potentiometer Prophet 5 caps from TechsMechs as well)
-MTG Turbo CPU Midi Upgrade installed
-Potentiometers cleaned/ new pots installed
-Power Supply Rebuilt and Full Calibration/Tuning"

Moog Prodigy Synthesizer SN 5565

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"Unit has been serviced by Synth Tailor Electronics and comes with their standard one year warranty (see warranty details below)

Restorations performed:

-All Pots disassembled, cleaned and re-greased

-Power Supply Rebuilt (Capacitors, Diodes)

-Black Leg Op Amps replaced (common with this era)

-Keybed Disassembled, ran through ultrasonic cleaner and contacts cleaned.

-Cosmetically cleaned inside and out

-Full Calibration and Tuning"

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EXTREMELY RARE PPG 1002 for Tom + first ever shop tour!!!

video upload by foleytronics fx repair

"Here is a demo of the EXTREMELY RARE PPG 1002 for Tom. Plus a bonus first ever tour of the Foleytronics shop!!

For those that want to attempt to tune this synth, here is what worked for me:

The trimmer by the regulators is the CV offset; trim for 0v for the lowest key. This interacts with the CV v/oct, which is right above where the two shielded cables connect from the 20-pin keyboard connector. Trim this for 1v/oct, which can be measured at the switched oscillator CV input jack on the back of the instrument. Once these are set, you can move on.

The oscillators are tricky. They each have an initial frequency trim pot and a volt/octave trim pot. However, the initial frequency trimmer cannot be set willy nilly to A440 because their initial tuning frequency greatly affects the octave selection switches on the top panel. What I found to be most effective is to set the MASTER TUNE front panel pot to 0, the OCTAVE SLIDER to the left of the keyboard to the middle and then begin tuning. Note, every trim pot for each oscillator will affect the others for that oscillator so this is an exercise in extreme patience.

First, turn off keyboard control for OSC B and roughly center its front panel tuning pot; set its octave to +3 and put a folded piece of paper on middle C. You are now going to tune the octave selector for OSC A; this part is confusing as there is a trimmer to adjust the octave selection offset for BOTH oscillators, but only OSC B has an adjustment to “match” its octave selection with that of A. Thus, you have to use that trimmer to get OSC A perfect and then match B to A - the method that worked for me was to switch between octaves for OSC A and adjust the octave offset trimmer along with the initial frequency trim pot for A to get a perfect octave selection for OSC A over the OSC B drone.

After the OSC A octave adjustment, it’s time to adjust B’s octave adjustment. Set A to +3, and switch OSC B to +1; adjust for zero beating at the trimmer in the upper left corner of the board right at the edge of the PCB. Then, switch OSC B back to +3 and adjust its initial frequency for zero beating; repeat this until the octave selection is perfect for B.

Now, it’s time to adjust for V/octave for each oscillator. Sadly, this adjustment affects the octave center calibration we just did, so you’ll have to keep backtracking until it’s good. Adjust the V/octave trim pot for OSC A, which is directly to the left of the CV v/octave we did in the first step. You’ll now have to mess with the init. frequency for A along with the V/oct to get the oscillator to track correctly on the keyboard, but like I said earlier, you have now probably slightly messed up the octave selection so you will have to go back and do that again. Then, adjust the tuning of OSC A again and repeat this process until OSC A tracks perfectly and has good octave selection. I couldn’t really get the +4 octave to be perfect, but hey, it’s a prototype and is probably 50+ years old.

Now for OSC B; it’s very similar to A. Use the V/octave adjustment trimmer which is the lower left trim pot on the PCB along with the initial frequency trim pot to get B to track along the keyboard. Again, you’ll have to go back and adjust the octave selection, but that’s not as bad for B because its octave adjustment doesn’t mess up OSC A’s octave selection. At this point, you should be able to get OSC A and OSC B to track the keyboard and the octave selections should be there"

Sequential Circuits Pro-One for John

video upload by foleytronics fx repair

Roland Jupiter-8 for Tyler

video upload by foleytronics fx repair

"Here is a demo of the Roland Jupiter-8 with a CR-78 and SRE-555 chorus echo. This JP8 had an interesting problem that many units with Encore MIDI have: an annoying click sound when moving any of the programmable sliders. It has since been solved and repaired and sounds lovely as ever!"

Arp Quadra for Randy

video upload by foleytronics fx repair

"Foleytronics is a repair shop in the Cincinnati area (Dayton, KY) specializing in vintage FX, drum machines, synthesizers, tape machines and vintage pro audio. Every shipped item gets a video demonstration as assurance for the client, insurance for both of us and documentation of these cool old machines for the rest of the world."

IG: foleytronics_llc
www.foleytronics.com

Akai VX-600 // restored by VS&C

Note: Auction links are affiliate links for which the site may be compensated.

via this auction

"The VX600 is a compact analog synthesizer from Akai. It features 6 voices, with 2 analog VCOs per voice. A highly flexible modulation matrix allows you to route the waveforms of each VCO through various editing functions. There is a resonant low-pass filter, a high-pass filter, two LFOs, three envelope generators, two external audio inputs, and more. The memory can store over 100 patches, each of which can contain key split divisions, MIDI information, and voice allocation."

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Prophet VS in for a major service

video upload by Espen Kraft

"I finally gave the VS some TLC. It's been sitting there unused for quite some time due to very glitchy buttons, a almost unreadable display and a PSU that was on it's last dying breath.
A new PSU, new display, a new set of switches were among my priorities leaving this with my tech.

I wearing a t-shirt from https://www.tshirtgrill.com

The power supply that's been installed can be found here:
https://synthronics.de/sci-sequential...

The rest of the new components can be found with the help of Google. ;-)

A big thanks to the tech Trond Gribbestad Lund for good work, and to Anders Jensen for taking a Saturday off to shoot the tech at work. Thanks guys!"

Rob Rosen Reveals His Ultimate Synth Collection

video upload by Anthony Marinelli Music

A look inside the Yamaha CS80, the 14th ever made Sequential Prophet-5, a Rev 1, and a Roland Juno-106, touching on some of the evolution of analog synthesis technology over the years.

"I hope you enjoy this rare opportunity to visit with my close friend Rob Rosen for a deep dive into his ultimate vintage synth collection. Together, we’ll see inside some of the rarest synthesizers of all-time and learn from this master technician how synthesizers have evolved, what makes them tick and why synthesizers make such cool sounds!

I consider Rob’s shop @Rosen Sound ground zero for anything relating to synthesizers. It’s also the biggest wonderland of vintage synths in perfect working order that you’ll ever see .

Rob is a self-taught technician and is now the world leader for repair, restoration, custom manufacturing and sales of vintage synthesizers. He’s also quite an accomplished musician programmer and keyboard player as well."

Chapter Time Stamps:
00:00:01 Intro Anthony on the street in Burbank, CA
00:01:55 Entering Inside Rosen Sound
00:02:06 Meeting “P” from Chromeo and The Rosen Sound Team
00:03:06 Rob shows us his personal work space
00:11:42 Montage of Synths - Start
00:12:35 Montage of Synths - End
00:12:36 Anthony and Rob in “The Cabin” - a wonderland of vintage synths
00:13:42 Anthony explains and demonstrates features on the CS-80
00:20:36 CS-80 “Under the Hood” in-depth tour by Rob
00:53:31 Prophet 5 “Under the Hood” in-depth tour by Rob
01:12:50 Anthony Demonstrates some of the Juno 106 sounds
01:19:27 Juno-106 “Under the Hood” in-depth tour by Rob
01:28:54 One-of-a-Kind Oberheim Modular 8 Voice System tour by Rob
01:35:31 Anthony asks Rob 20 Questions about Synthesizers
01:39:09 Rob asks Anthony some Questions about Synthesizers
01:49:47 Bass Shootout: 1973 Moog System 55 VS ARP 2600
01:54:54 Shoot Out Conclusion and Bass Tips

Another Oberheim Four Voice Synthesizer FVS Repair - Synthchaser #156

video upload by Synthchaser

"Last year I did a three part video series repairing an Oberheim Four Voice [posted here]. Now I've got couple more Four Voices in for repair, and I thought we'd check one of them out together. In this one we repair a problem with the polyphonic keyboard assigner module."

https://synthchaser.com/

Vintage Minimoog Model D Front Panel De-lamination

video upload by synthpro

Interesting bit on the front panel de-lamination starts at 2:33. Curious what he uses to get the glue off.

"Hey guys,

This is a look at a minimoog restoration I did for Bruce Hendrix. this minimoog still played decently but was definitely in need of some cosmetic TLC.

Thank you Bruce for the opportunity to restore your minimoog.

Appreciate all of you who watch my videos, thank you all!!

Sincerely,
Jareth"

Roland TR-808 (1981) - Werkstatt Matlak

video upload by Werkstatt Matlak

"Final test after repair and service.
Upgraded with Tubbutec UniPulse."