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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Re: over range micro

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

Posted on Oct 15, 2008

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How to fix loud hum and no heating in Sharp model R-308KW?

There could be a variety of reasons why this happens, but the likeliest
reason is the secondary interlock or monitor switch is broken. These are micro switches that tell the microwave that the door is closed. If this switch is broken, then the microwave thinks the door is still open and the carousel table won't turn, and the oven will not heat up.
I replaced an interlock switch last Saturday. The switch was $7.00 and took me an hour.
Ask your local repair person to test the interlock and monitor switches first, then go from there.
Good luck,

Jul 09, 2014 | Sharp R-308KK / R-308KW 1100 Watts...

1 Answer

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

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

Microwave Oven Basic Troubleshooting Tips



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....

Microwave Oven Basic Troubleshooting Tips



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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