Yes, tried using battery power only to no avail. I do know it's an AC hum along with some noise. The sound/note is a "B" . . . . typical AC hum note (60 cycle). Will keep trying. Also, don't want to move hardrive around too much. Makes grinding sound! I'll leave it alone. Don't want to make one of the drummers inside . . . . mad at me!! Ha!


Having fun!