Novice Question!

Ok..im a total novice on this desk (hog 3) so dont laugh!!

I know the answer to this question will be as easy as tieing a shoelace for you lot!!!

All fixtures (VL3000 spots) are patched...can pan/tilt......go to setup a look.....intensity up full...............no light!!!
How on earth do i get them on?.....all fixtures lamps are on....just no output!!
I have searched everywhere, and i am probably being really dull here!!
So if anyone can help me i would be very VERY grateful!

Now i must mention here that i come from the avo pearl camp !!

Many thanks in advance!
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