“I acquired this along with a load of other bits of vintage audio gear, and I can’t get this running sadly. It’s not totally dead, you power up and you can hear the output relay energise after a few seconds, but that’s about your lot. I suspect the CPU itself has died, but if you have a spare board or know these synths in details…
The Keyboard as a whole is complete, but it is missing all the screws that hold the casing together – the previous owner had obviously took it apart and put the screws somewhere safe, known only to him. If you’re thinking of having a go with it, then this is as far as I got:
PSU – Replaced the 7905 and 7805 regulators, powers up fine and gives correct voltages as per the service manual. Also replaced mains switch and re-wired although currently on a flying lead as I don’t have the correct C-9 mains connector, although one on order so will be here by the time this auction ends.
CPU board – Battery had corroded, removed battery cleaned PCB and fitted new battery with a holder. Left overnight to completely empty ram, still would not fire up. Powered up just the CPU board externally on the bench, not drawing excessive current on any of the supplies. Tried also pressing 5 + 8 on power up etc.. nothing, hence the assumption that the CPU is dead.” Click here to visit listing on eBay