OBERHEIM SYNTH

I am a new member of the group but my playing experience on Oberheim
goes clear back to the early module days. I later recorded one of my
albums using all Oberheim keyboards and modules. Recently I was asked
to refurbish an OB-8 and get it ready for sale, and I am considering
buying it myself. How "user servicable" is this unit? Are replacement
keys available? Chips? Display? Power supply? All that good stuff. I
will see the keyboard on July 5th but won't have access to ac or audio
until I take it back to the studio. Cosmetically, is there anything
specific I should look for beyond the obvious (holes, broken keys,
dents, missing knobs, bent pots); soot around pots, burns aroung the
ac cord, discoloration around the jacks, rattles, -that kind of stuff?

At the very least, you should consider repalcing the 5V rectifier. It is severely underrated, and often burns the PCBA. I replaced mine with a hefty one from