I have electricity to my outlet and the circuits are not broken...from your other answer to the microwave question.. I thought I might need one and where do I get it?
on my GE microwave, the fuse is behind the upper grill (held on by two phillips head screws). It is a 250V, 20A fuse. You should be able to get a replacement at any hardware store.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix microwaves.