You can cut one leg of the varistor and see if the game will boot. It probably will. Then, you should replace it. I think it protects the game against lightning strikes and other situations by failing closed and blowing the fuse. Cutting a leg removes the short and will allow the game to play again. I'm not sure what long term danger exists by running the game long term with the varistor removed but someone smarter than me will be along shortly to explain more thoroughly.