Vintage Simmons Drums (UK) Users Group

Hi guys,

just purchased a Simmons MTM module from the US and guess what, it�s not working :-(((  
It powers on and the display shows the startpage, but the membrane-switches do not 
respond or change anything. I checked the contacts inside and all 
seems to be fine. Anybody here had the same problem or a solution ? Maybe the battery
is dead ? Any schematics someone ?

Thanks a lot and all the best

Thomas