Question about Microwave Ovens

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Microwave hood combo

Started making a louder than usual humming or buzzing sound and it won't heat anything,I'm surprised it hasn't blown the fuse.when we have had power spike's it burns out the underneth light bulb every time, so it has taken some hits.

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Hi

power spikes are very damaging to a microwaves internal parts, it sounds like your transformer and/or magnetron are blown. if the unit is out of warranty I would reccomend getting a new microwave and also get a small single plug surge protector for it.

Posted on Mar 21, 2008

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GE microwave JE1660WB001 does not heat makes humming sound


The magnetron has gone and is the heart of the microwave oven, this part is the most expensive to replace, cheaper to buy new in the long run.

Apr 19, 2012 | GE JE1660 Microwave Oven

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This is the power transformer humming, sometimes when transformers get older you get vibrations in the windings due to magnetic fields generated within the transformer which causes the humming noise, It's more annoying than anything and won't affect the operation of the microwave.

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1 Answer

Hello, i own a 7year old advantium oven everything works except the microwave, the key pad and timer shows its on but wont heat. any suggestions thanks


Is there any unusual noise or is it louder or quieter than normal?

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.

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are working.

If it sounds the same as usual or a little louder, I would suspect the magnetron or high voltage diode has failed.

If it is much quieter than usual I would suspect a bad upper door switch.

The service manual is here.

Also see this file on door switches.

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1 Answer

Microwave is not heating


We would need your full model number and a little more information to help you.

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

So 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, your symptoms, as well as the answers to these questions:

When you hit "Start" to microwave, do the inside light, cooling fan, and turntable all come on?

Any unusual noises? Is it louder or quieter than usual?

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

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.

If there's no unusual noise, it may just be a bad connection at the magnetron.

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1 Answer

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1 Answer

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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

No heat, does not cook


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.
 
 
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 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 went dead when I opened the door ( same problem as closed the door ).
A - This often is a stuck or faulty door switch and it has blown the interior microwave fuse.
 
 
Q - My microwave is completely dead.
A - House fuse has blown or interior fuse inside the microwave has blown ( usually a part inside the microwave makes this fuse blow ) Sometimes a bad fuse holder inside the microwave cannot hold the fuse tight enough and the fuse will blow as well. 
 
 
Q - The fan in my microwave oven is not running will this hurt my microwave?
A - YES, the fan cools the magnetron and electronics, take the microwave in for service, most fans are not too expensive to replace.
 
 
Q - My microwave blows the fuse inside itself as soon as I push the start button.
A - Usually a shorted high voltage capacitor...see components section.

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1 Answer

Works - but the sound has changed


Possibly, the "fault" was the buzzing in the first place! Buzzing is usually a cabinet vibration caused by magnetic fields from the "gubbins". If the buzzing should occur again, try pushing/ pulling/ poking the cabinet while the oven is running, you may find a position that causes the buzz to stop.
Another possibility is you previously had something else placed in close proximity to the oven.
If a rattling cabinet is the problem, either try to reposition something, or just ignore it!

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