You don't need to replace the fuse with an exact copy -any fuse with the same specs will do. Every electronics shop should have surface mount 3AG fuse holders that take the easy-to-find common glass fuses. It's really simple to run a couple of wires from the mainboard to the holder which can be stuck practically anywhere. You need a fuse rated at approx. 2.5 amps (voltage is unimportant so long is it is higher than 125V)
However if you want to get the real thing, then goto either:
Both companies offer an international mail order service and stock the correct component (called a picoFuse, I think).