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matrixsynth.com’s Oberheim OB-Xa repair video series

For your viewing pleasure, I present Synthchaser #069 and #070…  A 2 part video series where I repair an OB-Xa for Matrix of Matrixsynth.com. One voice card is dead, and others are failing autotune and sounding really inconsistent from voice to voice. In the first video we take a look at the state of the […]

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All Oberheim kits back in stock

All the Oberheim OB series power supply and voice board kits are back in stock.  Click the shop menu above and navigate to your synth to view the selection of DIY service kits I have available.

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Synthchaser #059 – Oberheim OB-8 Calibration Procedure & Demo

In the previous video we installed the Synthchaser OB-8 Voice Board Rebuild kit, which replaces the dried up electrolytic capacitors, dodgy trimmer pots and noisy resistors that can prevent an OB-8 from autotuning and sounding consistent from voice to voice. In this video I show you how to perform a full calibration of the OB-8 […]

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Synthchaser #058 – Oberheim OB-8 Voice Board Rebuild

We install the Synthchaser OB-8 Voice Board Rebuild kit, which replaces the dried up electrolytic capacitors, dodgy trimmer pots and noisy resistors that can prevent an OB-8 from autotuning and sounding consistent from voice to voice. Kit used: Oberheim OB-8 Voice Board Rebuild Kit  

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Synthchaser #057 – Oberheim OB-8 Power Supply Rebuild & Dead Oscillator

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 […]

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Oberheim OB-X Repair Video

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.  […]

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Oberheim OB-Xa Factory Patches

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:    

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Oberheim OB-Xa Analog Synthesizer Repair Video Series

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 […]

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