Category: Oberheim

I show you around the inside of an Oberheim OB-8, and we take a look at a dead oscillator which is causing autotune to fail for one of the voices.  Then, I install my power supply rebuild kit, which replaces the power supply capacitors and beefs up the bridge rectifiers.

 

The kit I’m installing is:

Oberheim OB-8 Power Supply Capacitor & Rebuild Kit

 

I started rolling the video camera when I repaired a very sick Oberheim OB-X.  Turns out it suffered some damage from the corrosive effects of mouse urine.  We also see the dangers of leaving the old tantalum capacitors in synthesizers.  I track down a memory retention issue causing the synth not to store patches correctly.  I also show how to rebuild the OB-X power supply and change the battery.

Look for a full set of products in the shop to get your OB-X running smoothly and safely for years to come.

 

Here are the factory patches for the 120 preset version of the Oberheim OB-Xa as a WAV file for importing via the cassette interface:

oberheim-obxa-factory-patches-120

Here’s a short video showing how to import this WAV file into the synthesizer:

https://youtu.be/EdHJhI8WwjY

 

 

 

 

I’ve made a video series showing a repair/partial restoration I did for a customer’s Oberheim OB-Xa.  In the first part, I show what’s wrong with this keyboard and rebuild the power supply and voice cards:

In the second part, I rebuild the Pratt-Read keyboard and change the bushings.  I also repair a broken switch on the bender assembly:

And finally, I calibrate the power supply and voice cards:

I sell kits for everything I restored in this video (power supply, voice cards, and key bushings).  If you’re not comfortable with a soldering iron, I can also perform these services for your synth, just drop me a line.