Vintage Simmons Drums (UK) Users Group

> and a few months back I changed the battery and it did work. 
LED's 
> lit on the control panel but no digits in the display. The Prog 
> lights are lit for all 5 boards and the Trig lights flash when 
> triggered. 

Welcome!

I don't know about the Prog's, but at least the flashing Trig lights 
are normal. I guess it's possible that your display isn't making 
contact somewhere. Have you tried programming anything since changing 
the battery? Mine just died, so maybe I'll have something more to add 
after I change it.

Good luck,

Scott