GE JVM1860WD001 microwave

Have a read of this article.

http://www.magicmum.com/phpBB/viewtopic.php?f=4&t=21720
and this is full of advice
http://thesafebabyhub.com/baby-monitor-interference/

Baby Monitor Interference

If it's louder than normal, it usually indicates a shorted component in the high voltage circuit. If it's still heating, the high voltage rectifier might be failing. Sometimes they fail gradually, but eventually burn up. It's possible, too, that the magnetron could be drawing excessive current. That sometimes occurs when a vacuuum tube becomes "gassy" - partially filled with some foreign material. A leaky high voltage capacitor is a possibility as well.

Whirlpool Microwave Buzzing Loudly - ApplianceBlog

www.applianceblog.com/.../26531-Whirlpool-Microwave-Buzzing-Loud...

Aug 12, 2011 - 10 posts - ‎2 authors
My Whirlpool MT4155SPS-2 microwave oven has recently started to buzz loudlywhen operated. The sound is getting louder and more frequent ...

Whirlpool making intermittent loud buzzing noise Microwave ...

www.fixya.com > ... > Microwave Ovens

Whirlpool microwave ovens making intermittent loud buzzing noise related questions and answers. Ask your ... ...loud buzzing noise and it doesn't heat. i just tried it again and let it run for 1 minute. ... Question about Accuwave Microwave Oven.

Troubleshooting the Microwave: Potential Problems ...

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If your microwave buzzes loudly and produces no heat you probably have a defective power .... I have a whirlpool oven range and it's less than a year old. .... Humming sound stops when I open door to remove food, but when door is closed, ...

Whirlpool Microwave Ovens - Consumer Affairs

replace touch pad the control board is self diagnosing and is not receiving the signal or continually receiving a stuck key signal

Check the circuit board.

This sound you describe is not normal and should be checked quickly, even if it means returning the item.

If the loud buzzing noise is present when cooking food, the magnetron is the likely cause, some models are louder than others. But if the buzzing noise is there without the microwave running it should be checked. No! this something that should be checked by a professional for safety.

This has been repaired and shipped.

Sounds like the power relay has quit. Time for a new one.

Be sure to keep this oven unplugged or the door open until it is fixed. If it runs by itself, this is a fire hazard.

First listen carefully for a buzzing sound behind the control panel when the door is shut.

If it's present, chances are you have a failing capacitor on the control panel assembly, which can be repaired for $39.95 in most cases. Details are here.

If that or a louder buzzing is only present when you have the door closed, then the oven is cooking when it's not supposed to, but the cooling fan is not on, and it is overheating and tripping the breaker.

That would be due to a shorted cook relay on the control board. That can also be repaired with our $39.95 service.

The odd characters on the display concern me separately. This could mean you have a noisy or otherwise failing magnetron.

If the display is fine when you're cooking properly with it, then the magnetron is probably okay.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.