Need to replace the fuse in the AC adapter for a friends external computer speakers, and can't make out the rating of the one in there. *I* think it looks like a 1A fast blow, but the adapter is rated at 1A. Bought some 2A fast blow fuses to put in it, just on a hunch, cause I can't remember the formula for calculating fuses for power supplies. Anybody else know? Would2A fb be a *bad* choice for a 1A power supply?