The same happened on one of my 3Ks. I checked all the external connections and even changed power supplies. The board would just intermittently shut off and reboot while I was playing. (Fortunately it happened during an afternoon set up for a night job and I put my back-up to work.)

I took the problem board to an authorized repair guy. He set it up and ran midi files through it for several hours and could not duplicate the problem.

I gave him the go-ahead to open it up and check all connections and solder joints. He said he found no problems, but re-soldered quite a few of the joints anyway.

It worked.....for about a year. Then, it happened again. Just once. Since then, I can not get the problem board to re-create the problem.


Eddie