I briefly show you my set up to test ARP Voltage Controlled Filter submodules. We also have a listen to a couple of different ARP filter designs, the 4075 found in all ARPs from 1975 on, and the 4035 Moog style ladder filter found in some rarer Odysseys.
Author: synthchaser
Synthchaser #114 – Memorymoog Quiet Fan Replacement
I show you how to replace the original noisy AC fan with a quiet DC fan without adding stress to the power supply of a vintage Memorymoog.
Synthchaser #113 – ARP Fender Rhodes Chroma Repair
This Rhodes Chroma lay dormant for over a decade, and wouldn’t wake up from its long nap. In this video we troubleshoot and repair the power supply and get the synth alive and making sound. We also have a brief tour around the inside of this legendary polysynth.
Want to see more of the restoration and upgrade of this Chroma? Let me know what you’d like to see in the comments!
Synthchaser #112 – Memorymoog Tour Inside & No Output Troubleshooting
Join me in live chat during the premiere of my new video 11/9/18 @ 11:00AM PST.
00:00 A Broken Memorymoog
02:15 Opening the Memorymoog
02:52 Technical Tour Inside the Memorymoog
10:22 Troubleshooting The Memorymoog
18:17 A Fixed Memorymoog
Today we have a tour around the inside of a vintage Moog Memorymoog Plus with no output. I show you how to open up the synthesizer, what’s inside and how it works on a high level. Then we dive in and troubleshoot my no output problem.
Synthchaser #111 – Dead Oberheim Xpander Repair
The Oberheim Xpander. 6 voice little brother of the mighty Matrix-12. One day his beloved Oberheim Xpander would not turn on. So he sent it to Synth Chaser to perform a little synth CPR. We’ll have a little tour around the inside and then get this Xpander working again!
Synthchaser #110 – Sequential Circuits Prophet 5 Functional Test & Calibration
I show how to verify the functionality, tuning, and calibration of a Prophet 5 and make the calibrations that are commonly needed to get these sounding right. Not a musical video, but it provides an in depth look at the building blocks you have available with this powerful synth to create amazing patches.
Synthchaser #109 – LED Octave Transpose Switch for ARP Synthesizers – Pro Soloist, Odyssey, etc.
Introducing an innovative replacement for the obsolete and impossible to find ARP Octave Transpose switch found on the ARP Pro Soloist & Pro/DGX. Let me know in the comments what you think of this as a replacement! If there’s any interest, I will also make one for other ARP synths like the Odyssey and Axxe.
This particular Pro Soloist also has my replacement 4034 filter submodule installed, which sounds just like the original, only better!
Synthchaser LED Octave Transpose Switch for ARP Pro Soloist & Pro/DGX Synthesizers
Inside the World’s Worst Juno 106
Check out the photo album on my Facebook page with pictures inside the world’s worst Juno 106.
https://www.facebook.com/media/set/?set=a.680775182290559.1073741829.544327069268705&type=3
Synthchaser #108 – Vintage Minimoog Repair & Tour Inside
Today we have a tour around the inside of a vintage Moog Minimoog Model D with a damaged and dangerously miswired power cord. I show you how to open up the synthesizer, what’s inside, and how to change the power cord and power light.
Power lamps are available here:
Synthchaser #107 – Homemade LM3900 Norton Op Amp Tester
In this short video, I explain what an op amp is and how a Norton Op Amp is different, and then show a little test fixture I made to test these specialized IC Chips that I run into frequently while repairing vintage synthesizers.
Full Application Notes for the LM3900:
