Vintage Simmons Drums (UK) Users Group

Hi, my first post :)
respect to you all

I love simmons, not the best made but just too cool

I bought about 5 SDS7's just to get one that works fully

Most of all i love my SDS6 but it's stopped working >sniff<

Does anyone know about these or even have schematics or experience of 
fixing them? it was working fine but suddenly now all the lights come 
on OR it just says error when i try to program it

thanks everyone, all the best

:O)