#1
My fuse blew on my VK, where can I buy a new one?
My Gear
Schecter C-1 Hellraiser
EHX Metal Muff
Peavey Valvking 112
Boss ME-50
Holy Grail Reverb
#2
RadioShack type place or electronic wholesaler.

I believe there is some info on first page of The Valveking Thread that would help. (ie Fuse # etc).

Do you see that green plastic screw looking thing on back? Turn it 1/4 or 1/2 turn and it pops right out. Take that in and ask for a replacement.
#3
The fuse is the fire alarm, not the fire; there could be something bigger with your amp than just a blown fuse.