Maytag microwave humming

Maytag MMV5465AAS microwave

Woke up one morning to find the circuit breaker tripped. Reset the breaker and the microwave was humming. Not as if it was running necessarily, but a somewhat loud steady hum. When we open the door the humming stops. When we close the door again the humming starts again. The display on the control panel hasn't worked for a couple years now. It displays for a few seconds at a time once a month or so, but the display seems to work a little more often now. The microwave works very well. It even seems as though it heats faster than it used to, but that could be my imagination. The light works. The moving glass tray works.

What is making it hum and is it something I can fix myself without getting electrocuted?

 

That steady hum sounds like the unit is producing microwave energy......or the high voltage supply is partially on.

If you don't have a display how do you set it ?

If that unit tripped the circuit breaker I would be very leary in keeping it.

Couldn't go in to much detail as that model number is not listed......is it correct ?

 

There are no user serviceable parts in a microwave. The hum could very well be a transformer coil that is starting to short out.

 

To set it my family members just hit cancel a couple times to remove any time that may be remaining on it then cycle through the time setting procedure from memory just like you would if you could see the display. I personally just push the 30 second button as many times as I need to, to make it run for as long as I want it to. And you are right. I boogered up the model number. It is a MMV5165AAS. Sorry about that. So is the transformer coil or high voltage supply something I can replace myself or do I have to take it to a serviceman?

 

There aren't many servicemen working on microwave ovens out of warranty. Unfortunately they have joined the ranks of disposable appliances.

Normally....the high voltage section is on or off. It doesn't usually stay partially on. In your case it may be caused by the control board which ultimately turns the microwave section on.

That control board is fairly pricey. I left you a link to the parts replacement site.

I work on microwave ovens but it's hazardous work. I would recommend you contact Maytag for service unless you have a small appliance service center in your area.

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Maytag Microwave MMV5165AAS Complete Parts List

 

If you do open up the microwave, be aware that the high voltage capacitors will hold their charge for a very long time and have more than enough power to kill a person. Make sure that you can safely discharge the caps first.