How does he get a new power supply, where from and how much are they.
Simple answer to that Tony, wait till you find another good as new kb at eBay, and pick the parts from there.
Seriously, SD1 has been a very reliable kb both for me and those I know who still use SD1 regulary.
Two (common?) issues that I know about, 1 replaced main volume slider and 2 fixed bad contact for screen.
Myself I had a minor bug when update software, contacted AJ and also sent a email to Ketron. Rapid reply from both, got a tiny file and a description about how to load it into kb from people at Ketron Italy, and all just fine.
Imagine if Audya had as few problems as SD1?