Hi all. A couple of days ago the battery that backs up the dram on my keyboard exploded !! Fortunately there was no fire or damaged to the board. The battery is (was) a 5 volt ni-cd made up of 4 1.25 volt button cells. The top cell blew off and I found pieces scattered through out the insides of the board. Any one else ever have this happen ? I replaced the battery and all seems ok now.