Question about Whirlpool MH7140XF Microwave Oven

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It is not heating. Everything else appears to in working order. Just not heating.

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Hi,


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

Basic
Microwave Oven Troubleshooting Tips

heatman101


0----------

Posted on Feb 22, 2011

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  • 2 Answers

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1 Answer

Everything works but doesn't heat


If everything looks like its cooking and it does not heat then it is your mag tube that is dead, it will need to be replaced. You can order one from marcone.com with your model #

Nov 09, 2010 | Samsung SMH9151 Microwave Oven

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MY MICROWAVE IS NOT HEATING , EVERYTHING APPEARS TO BE WORKING FINE? WHAT COULD IT BE? IT IS A DAWOOD KOR-1B4H


MY MICROWAVE IS NOT HEATING , EVERYTHING APPEARS TO BE WORKING FINE? WHAT COULD IT BE? IT IS A DAWOOD KOR-131G

Apr 12, 2010 | Daewoo KOR-1B4H Microwave Oven

1 Answer

Unit will not heat up


check contact points for current. tabs might be bent and are not contacting correctly and no heat the Ni-Chrome wire heats up glow orange when currant is applied , might need a test voltage Meter and screw driver too >^.^<

Mar 14, 2010 | Kenmore Microwave Ovens

1 Answer

DCS - CMO24SS - 900 Watt - Microwave not Heating


If all appears to be running as its working but just no heat. Could be issue with magnetron. You could also have loose connections to magnetron or somewhere in high voltaged as well.

Nov 24, 2009 | DCS CMO-24-SS Convection/Microwave Oven

1 Answer

Unit does not heat up the lighy works the timer works the turn table works there is no heat


Most likely the magnetron is at fault if everything else appears normal. This is the main part of a microwave & is an expensive part to replace, it might be more economical to buy a new microwave.

Sep 23, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Everything appears to work fine but it is not heating anymore.


If the microwave oven appears to be working but it is not heating the food, it is very possible that the magnetron, or its power supply has failed.

Jerry G.

May 03, 2009 | Hotpoint RVM1435 Microwave Oven

2 Answers

Appears normal


ya this is the same problem i too had...everything will seem to right but the part required for heating might be damaged internally...try changing tat...here i did the same...

Sep 19, 2008 | Frigidaire GLMV168K Microwave Oven

1 Answer

Not Heating


It appears that all of your microwaves have bad magnetrons.

If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

But they send you a replacement magnetron. GE Customer Service is here.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

Sep 08, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave making noise, not heating


Was the noise something like someone growling into a coffee cup?

As odd as that sounds, that's a common sound for a bad magnetron to make, a hollow gurgling or sizzling.

It may be the magnetron, but generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and
disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your FULL model number here: http://www3.sears.com (the 3 is correct)

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

Dec 04, 2007 | Kenmore 62702 Microwave Oven

1 Answer

Microwave not heating.


check magnetron related circuit and replace magneron, check condencer, diode and etc.,

Oct 27, 2007 | GE Spacemaker JVM1640SJ Microwave Oven

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