Archive of the former Yahoo!Groups mailing list: Vintage Simmons Drums (UK) Users Group

I have an SDS-7 and as long as it is powered it works fine. When
unplugged for any length of time (a few hours) all is lost. I realize
this must be a battery problem. Does anyone have expeience with this
who could explain how to locate the battery and or batterys and change
them. Is there a battery on each card module or only one on the main
board?

thanks in advance
Barry