Fuse? what kind of fuse do i need to use for a Peavey xxxi was playing a show and before i got

Question

what kind of fuse do i need to use for a Peavey xxxi was playing a show and before i got on, i plugged my power conditioner in but had the head turned offand as soon as i flipped the conditioner on it blew but i think it's okay nowbut after it ''popped'' i plugged my head in seperatly into the output (dumb idea)and then it turned on then it just turned off a few moments latercould it just be a fuse? i hope not tubes but if you know what fuse exactly to get that'd just help a whole lot