Oberheim OBXa SN 820101

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"This unit came to us in relatively good working order, but these synths need a full restoration in order to work like new again and be as reliable as possible, so that's what we did. It's been meticulously cleaned inside and out and electronically refurbished so it's working exactly as it should, no surprises typical of most vintage synth purchases these days. We also took some important future-proofing measures, so it will hopefully outlast all others. This unit should tune better than all others too as it also includes our custom tuning stabilization modifications. This process took approximately 37 hours of valuable skilled labor which is of course factored into our price - you get what you pay for. This ob-xa contains a JL Cooper MIDI retrofit.




Here's a rundown of what our tech did - there could be more things left out:

Disassembled and cleaned inside and out
Keyboard mechanism rebuilt:
Old bushings removed and replaced with new bushings
Key guides adjusted
Bus bars cleaned
Key contacts cleaned
Keys cleaned and reinstalled
Replaced power supply caps, replaced IC socket, diodes, trims
Lots of molex connector terminals replaced
Jacks cleaned
All pots cleaned
VCO trimpots replaced for more stable tuning
Replaced most electrolytic capacitors
Recalibrated
Replaced 4053 logic IC chips x3
Replaced CV section TL082 IC chips x8
Replaced CA3080 VCAs IC chips in CV section x8
Replaced battery
Reloaded patch data
Replaced wooden sides
Repaired often defective pitchbend"