Question about Maytag MMV5156AAS Microwave Oven

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Over range micro

Does not heat and makes a humming noies can you help

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  • tomkafides Jul 15, 2008

    every thing works but does not heat

  • dstitz Mar 17, 2009

    Our microwave is making a humming noise, has a smell, and does not heat. Any ideas?

  • fanta1 Apr 14, 2009

    i have the same problem,when i called the technician they will fix it but needs 250 bucks which is way more expensive



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Same with ours does not heat but makes a loud humming noise

Posted on Oct 15, 2008


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The oven makes a loud humming noise when turned on, doesnt heat food, everything else works

This is most likely a bad magnetron, but it could also be a bad high voltage diode.

I would check out this website

Or you could call a local Appliance Repair Technician

Dec 10, 2010 | Kenmore 62642 / 62644 / 62649 Microwave...

1 Answer

Microwave not heating and it is making a humming sound when it's on

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Jun 14, 2010 | Frigidaire Over-the-Range Microwave

1 Answer

Microwave makes a loud hum and won't heat. What

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

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Apr 09, 2010 | Electrolux Over-the-Range Microwave

1 Answer

Generic problem for all Kenmore Microwave

Loud hum is usually due to faulty hv diod, resonance capacitor, or the magnatrone feed thru capacitor , chk it with a ohm meter , one by one n replace it .. zaheer Islamabad

Dec 31, 2009 | Kenmore Microwave Ovens

1 Answer

Micro wave not heating

It sounds like a failing magnetron. Sometimes they can be intermittent before they finally fail for good.

Chances are your oven has a 5-10 year warranty on the magnetron.

Please note that FixYa is not currently notifying us Experts when Clarification Requests are answered.

To allow us to help you effectively (at no charge), please post a
NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, and your detailed symptoms.

A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.

Dec 12, 2009 | Maytag Appliances Over-the-Range Microwave...

1 Answer

Boiling waer under micro wave lots of steam into micro wave, turn on micro wave ,pop noise like glass miro wave comes on louder hum than normal no heat

Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.
 Q - My microwave is running and sounds like it is working but will not heat up anything.
A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.

Mar 03, 2009 | Amana Radarange Microwave Oven

1 Answer

Deep humming sound

This usually means the magnetron is failing.

Just be sure the internal cooling fan is working by making sure you feel air flow. If not, call for service right away.

The magnetron part cost is covered beyond the normal 1-year warranty, so when it gets worse or stops heating, you'll have to call for service.

To find an authorized Samsung servicer, look here.

We're happy to help and we appreciate your thoughtful rating of our answer.

Jun 04, 2008 | Samsung SMH7178STD Microwave Oven

2 Answers

Microwave made a loud pop,won't heat,sounds like it's only on half power, makes a low intermittent hum

This is almost certainly a blown high voltage diode.

Please reply back with your brand and model number so we can help you.

May 31, 2008 | Microwave Ovens

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