I was cycling through some of the backing tracks, playing along and having a great time when suddenly and for no apparent reason my ride (surge) cymbal just stopped working. Nada. I checked the cables first, unplugged, re-plugged, and it didn't help. Having been recording myself and working in a home studio since the 1960's (no, that's not a mis-type - my first recorder was a Telefunken 4 track reel-to-reel), I know to try simple FIRST. Next simple, power the unit off and back on. That did the trick, and the cymbal has worked fine since, but it worries me. Anyone else had this problem?