Vintage Simmons Drums (UK) Users Group

Hello everyone,

I need to change the main battery in my SDS7 that I just recently
purchased. I would just like to know something: 

When the battery is dead do you lose all the preset sounds? If yes,
how do you get the sounds back?

The person that sold the unit to me said the unit sounded great but
that the main battery needed tp be changed. When I received the unit
non of the sounds worked. I am in the process of trying to replace the
battery. I contacted the seller and he said not to worry about the
sounds and that once I replaced the battery with a new one the unit
would work fine with all the sounds intact.

Is this in fact true? I'm really worried that I just got ripped off.

Joey