GE JVM1440 Microwave Oven "electric motor loud hum running" Questions

...electric-sounding noise called arcing. If you notice that while using your microwave, the electricity flashes in addition to making a sound. Stop using your microwave if this occurs and you notice a ...

...motor in your car. It's a waste product of work. The best test for a microwave oven is to put a half cup of cold water in and run the set for atleast 30 secs.. If the water is not hot or atleast very ...