Guitar Hero 3 Controller won't sync

[Tom|Nbk]

My girlfriend bought me Guitar Hero 3, the whole set with the Les Paul Guitar, was dead chuffed but it seems to be broked?!

I've tried all i can to sync it, it just won't have it. I press the button it flashes quickly then i press it on the guitar and it does the same but never syncs, any ideas at all or have we got a faulty guitar

 

[Insanity]

I think all i did was turn the guitar on first (big round PS button) then hold the little botton down on the reciever untill it flashed quickly and that was it.

If that doesnt work, then something is scewy.