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We were in the middle of microwaving and the unit shut off, everything on the microwave went out. I checked the circuit breaker, it was not tripped. I unplugged the unit and tested the power socket, it worked ok. I replugged the microwave and still no response at all, nothing, no lights, no panel, no fan, etc.. Any ideas? Model MMV4205AAB April 2004
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You have a fuse behind the screen panel. You have screws inside the microwave holding the panel. you have 1-2 at the bottom. You may also have to remove the vent. It has 2-3 screws which will be inside the vent. These can be removed from the front. Once these are removed the panel will pop off and you will see the fuse The fuse can be bought at a radio shack. BE SURE TO UNPLUG THE MICROWAVE! Good Luck
your power transformer for the magnetron could have a shorted primary power winding,the door safety interlock switch could be mis-adjusted,this normally blows the internal unit fuse,a shorted high voltage capacitor,or diode,a bare wire inside the unit,more than the microwave on that circuit or a weak circuit breaker in the house power panel
change the units internal ceramic fuse and try this,may just be a fuse or if new one blows then could be h.v. diode.capacitor,thermal fuse,magnetron tube
Microwaves that are either built in, a part of the oven, or over the range are on a dedicated circuit by law. This means nothing else could have tripped that breaker but the microwave.
If it has a problem severe enough to trip a 20 amp breaker several times, it is only getting worse each time you reset the breaker and turn it on.
There is a possible chance of fire. I recommend you turn the circuit breaker off and replace the microwave. Is it a plug in, or over the range type?
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