What Does a Blown Fuse Look like?

Answer

The best way to know visually if a fuse is blown is by looking at the fuse wire inside. If it looks like it is 'disconnected', the the fuse is blown. Sometimes blown fuses have burn marks, which is an obvious indicator that the fuse is blown.
Q&A Related to "What Does a Blown Fuse Look like"
Fuses are designed to have their wires melt any time too much electricity passes through them, according to AFB.org. They sometimes blow because of a temporary increase in the electricity
http://www.ehow.com/list_7802165_causes-blown-fuse...
It sounds like there's a short inside your microwave loading down the internal power supply and blowing the fuse. Unless you are familiar with microwave theory of operation and repair
http://answers.yahoo.com/question/index?qid=201112...
No power, Not working, Not turning on, EXC.
http://wiki.answers.com/Q/What_are_the_signs_of_a_...
You need to check it with a basic Ohmmeter/VOM/DMM. Unplug. Remove fuse. Check continuity. If there is continuity across the fuse - the fuse is good. You also can use a voltmeter
http://www.fixya.com/support/t5940856-tell
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