I found a "workaround" .. not a "fix" for powering the Ketron SD1000 when the MIDI port won't provide enough juice. $60 is not a cheap workaround, but this comes with a 9v cable that fits EXACTLY into the SD1000 and lights it up. Also can recharge smartphones, tablets, an even some laptops. Actually, with the right cable, it could probably jump-start your CAR !!

http://amzn.to/1cAdigT