Jenn-Air JMV8000BAW My Jenn-Air JMV8000BAW above the stovetop microwave made an arcing sound and tripped the arc/ground fault breaker. My wife was boiling two items on the stovetop below it at the time. Breaker will reset and everything appears ok for now. Not sure if I should trust it? Could the problem be to much moisture in the microwave at the time or do I need to look at something? THANKS

That sounds like it has got damp from the winter lay up. There is huge voltage in Microwave ovens that can easily arc across condensation. If you have a fan heater you could try blowing warm air through it for an hour. I am pretty sure it can be repaired if that doesn't fix it. They are around $850 new.

https://www.fixya.com/support/r29874712-repairing_microwave_ovens

https://www.google.com/search?q=High+pointe+ec942k9e+tripping+breaker

Could be arcing around HV transformer or even an HV wire, Sometimes an insulator on a capacitor will get old, dusty or breakdown and arc between the terminals. Have you ran this with the cover off to see if you can see any visual arcing??? If it cooks sure sounds like it is probably not the mag. Something supplying power to the mag arcing to ground I would expect.

The magnetron is arcing, or bare metal is exposed on the inside of the microwave oven, I recommend having it checked before further use.

open circuit switch when power reaches this switch it will shut down as switch is us

no it cannot be replaced you have to buy a brand new one srry but have a nice day

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

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condensation [steam] is getting into microwave advise: move microwave or move cooker..it does`nt sound good..!

It's arcing due to the food being attached to the mica plate. It needs to be serviced by an authorized technician. Don't use it or you can break the microwave valve.

more than likely you door safety switch has a short and every time you pull the door open the connections arc and trip the breaker or blows the fuse.

Make sure that a lamp will work in the outlet powering the microwave. If ok, remove the case (with the plug pulled), and look for a tripped breaker or blown fuse. If found, check for a shorted high voltage diode in the magnetron power supply. It may also have a shorted stirrer bearing located above or beside the cavity where the microwaves come into it. The stirrer is a metal fan-like device that scatters the microwaves to get more even heating and has a plastic bearing that arcs internally causing a microwave short. Replace the stirrer unit.
If no fuse or breaker troubles, look for faulty or loose micro-switches around the door latch mechanism.