Repair Oberheim OB-X Synthesizer Reparatur Service
Oberheim OB-X synthesizer repair. This OB-X stood unused in an attic for about 2 decades. When my customer discovered it, of course, he wanted to test it immediately. But unfortunately he only made a few weird sounds. And so he came to me ...
Oberheim OB-X Reparatur Service
This picture illustrates a bit the state in which the Oberheim came to me. Because of the storage in the attic, there was a lot of corrosion all over the synthesizer. The bender section gave me the biggest problems. This has a direct influence on the tuning stability of the OB-X. So I renewed the spring first. It wasn't that easy, but finally I found a company that could supply me with a suitable spring with the appropriate pulling force. Then the Bender potentiometer had to be replaced. Here I was able to get a suitable potentiometer. Last but not least, I have expanded the zero crossing a little using the well-known circuit from the Internet (diodes).
Of course I restored all the other usual things. New key bushings, bus contacts and bus bar cleaned, of course also the buttons themselves. All potentiometers and buttons cleaned. All plug contacts. Calibration, factory sounds ...
A little tip if you want to play the factory sounds. The level has to be really high. The one who goes into the OB-X. There's no point in just pulling up the level on the DAW. I switched a mixer in between, which had a high output power at the output. Only then did it work.