Analog synthesizer repair, parts, sales, and innovation. I buy broken synthesizers!
ARP Synthesizers
In this video series, I’m repairing one of each different version of vintage ARP Odyssey! In this installment I bench test and repair faults with the 4075 filters, keyboard tracking, and a dead oscillator. Then we look at and listen to the finished Odysseys.
00:00 4075 Filter testing & repair
01:18 Keyboard control voltage repair
02:49 Dead oscillator repair + earthquake
08:42 Mk I White 2800 Finished
09:20 Mk I Black & Gold 2800 Finished
10:18 Mk II 2813 Finished
11:41 Mk III 2823 Finished
In this video series, I’m repairing one of each different version of vintage ARP Odyssey! In this installment we look at slider repair and replacement options, keybed refurbishing, and what capacitors need to be replaced.
00:00 Intro / Approach to refurbishing
02:30 Slider repair and replacement options
08:58 Keybed variations and refurbishing
17:08 Rotary pot repair
17:47 Power supply & fuses
19:05 Capacitor replacement
In this video series, I’m repairing one of each different version of vintage ARP Odyssey! In this installment we go over the differences between models, tear them down and compare their innards!
00:00 Intro
00:54 Mk I 2800 White – Outside
01:48 Mk I 2800 Black & Gold – Outside
02:20 Mk II 2813 – Outside
03:49 Mk III 2823 – Outside
04:35 Mk I 2800 White – Inside
08:02 Mk I 2800 Black & Gold – Inside
09:38 Mk II 2813 – Inside
14:28 Mk III 2823 – Inside
20:26 Revision I vs. Revision II Boards
I’m doing another run of the ARP Quadra MIDI adapters and the ARP Quadra Membrane panels, both of which products were previously sold out. ARP Quadra MIDI is available for pre-order (at a discount!) at the link below. Contact me to be notified when the Membrane panel is available to order.
We kick off the New Year on the Synthchaser channel with troubleshooting and repair of this ARP Pro/DGX Mk I, which is the same as the ARP Pro Soloist with the exception of having pushbutton switches for voice selection instead of toggle switches. This Pro/DGX has no output at all, so together we troubleshoot and repair it, and in the process I explain how one of the least understood circuit boards in the synthesizer works.
We continue the repair of Don Lewis’ original Model 2700 ARP Soloist. Among other challenges, we run into a big problem–the 4030 Violin voice submodule is dead. It’s encased in epoxy and no schematic is available, but will that stop Synthchaser? I think not…
My friend Don Lewis was a brilliant musician and engineer. Before he built his LEO (Live Electronic Orchestra) system, he used the original, Model 2700 ARP Soloist for leads. His ARP Soloist has been sitting unused since the 1970’s and in this video I begin to repair it so it can be donated to a cause Don was a part of. If there is enough interest, I will continue this video series.
The Ballad Of Don Lewis DVD: https://amzn.to/3t2Nbw9
My multimeter: https://amzn.to/3Ltgqi3
My oscilloscope: https://amzn.to/3rm6b8d
A brief, off-the-cuff run through that shows the features and sounds of the ARP Explorer I. No planning or editing because I think the ARP Explorer I is so obscure that this will be one of my least viewed videos. Prove me right or wrong.
The ARP Explorer I (Model 2900) was ARP’s first non-preset single oscillator synthesizer, pre-dating the Axxe and the Solus. It includes the same 4027-1 Voltage Controlled Oscillator module found in the ARP 2600, and the same 4034 Moog Ladder Filter Voltage Controlled Filter module found in the ARP Pro Soloist.
I’ve got 3 broken ARP Explorer I synthesizers, and I show you my approach to repairing and restoring them. The ARP Explorer I (Model 2900) was ARP’s first non-preset single oscillator synthesizer, pre-dating the Axxe and the Solus. It includes the same 4027-1 Voltage Controlled Oscillator module found in the ARP 2600, and the same 4034 Moog Ladder Filter Voltage Controlled Filter module found in the ARP Pro Soloist.
00:00 Intro to the Explorer I
05:10 Look Inside / Disassembly
12:13 Keybeds
13:35 Circuit Boards Depopulating & Cleaning
16:38 Cleaning Switches & Rotary Pots
21:24 Capacitors, ICs & Sliders
27:37 Bench Testing, Repair & Calibration
Quadruple ARP Odyssey Synthesizer Repair - Part 3 - Troubleshooting & Final Demos - Synthchaser #171
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The completed ARP Odysseys are for sale now at synthchaser.com/https://www.facebook.com/TheSynthChaserhttps://instagram.com/synthchaserMy oscilloscop...
Synthchaser MIDI Adapter for ARP Quadra
synthchaser.com
Good news Quadra owners! I’m doing another run! Pre-order by March 14, 2025 and save $50! Boards and materials are already in hand and estimated ship date is April 1, 2025. The first and only MI...