Vintage Simmons Drums (UK) Users Group

i have had these drums in storage for ten years. when i turn the
module on the led lights come on but there is not much else, i get a
little sound from 1 tom and the snare. the bass makes asmall thump,
the others nothing. all the tone pitch knobs which run vertical on the
left and across are non responsive. anyone have the schematics or any
ideas would greatly be appreciated.       thanks paul down under
g,day.........