Microwave not working at all? This video demonstrates how to test a fuse on a microwave. The line fuse and thermal fuse are commonly replaced parts for a microwave that won't turn on or is not heating.
Other commonly replaced parts for a microwave that is not heating or turning on:
Diode Door switch Main control board Thermoprotector
All of the information provided in this part testing video is applicable to the following brands: Amana, Frigidaire, GE, Kenmore, LG, Maytag, Panasonic, Samsung, Sharp, Whirlpool