Question about Whirlpool MH7140XF Microwave Oven

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Own Whirlpool microwave model MH7100XY, everything works on it, however it does not heat anything, heard a small pop and after that it does not warm or cook anything?????

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The pop sound is an indicator the magnetron is gone that heats the food. It is cheaper to replace the microwave oven than have it repaired.

Posted on Mar 19, 2011

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No heat


HI, the magnetron has failed at this point. the pop you herd was from the magnetron tube. i would also check the high limit capacitor as well. it may have caused this pop as well.

I would replace the capacitor(high limit) and magnetron in this case.

The failed magnetron has been automatically confirmed by the no heating issue but, the cap may be on its way out soon.

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Everything works except the cooking part/no heating/turntable not turning, help!


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Jan 03, 2009 | Whirlpool GH4155XP Microwave Oven

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Amana Microwave, MVH320E Popped


This is usually caused by a blown high voltage rectifier diode.

Here are some links you or someone you know can use for test help, but read their safety warnings first:






line-height:normal">mso-fareast-font-family:"Times New Roman""> http://www.microtechfactoryservice.com/diode.html



line-height:normal">mso-fareast-font-family:"Times New Roman""> http://www.microtechfactoryservice.com/mag_test.html



line-height:normal">mso-fareast-font-family:"Times New Roman""> http://www.microtechfactoryservice.com/xformer.html





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You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

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 and we appreciate your thoughtful rating of our answer.

Jul 01, 2008 | Amana AMV1162 Microwave Oven

2 Answers

Won't heat


Hello,

The Microwave's "Magnetron" is what heats things up. This is true for all Microwave's. The magnetron is normally on the left and sends excited electrons across the interior. Those electrons bounce around inside until their energy is spent.These excited electron 'waves' are slightly larger than the hole openings in the front door glass panel black grid. Usually, when a magnetron goes you would see and hear some popping and witness some arcing inside the interior. However, you may not have been nearby when this happened. Since you heard popping behind the control panel, you probably have electronic failure in the control panel and that failure may have been precipitated by the magnetron or not. In any case, it is very dangerous to disassemble a Microwave and access the magnetron unless you are trained and have been qualified to do this.

With the cost of Microwaves having stabilized and also being quite low compared to 20 years ago, I would take it to a warranty service provider in your area that also sells them, such as Home Depot for example. That way, if it is too costly to repair compared to a replacement cost you can shop for a new one and may even get a discount should you ask them to give you one.

Sorry for the apparent bad news but if you feel this is the answer you're looking for please rate this solution as fixed or helpful. It means a lot to those of us who work for you in the free area instead of for a fee.


You can phone or write this address below for questions regarding your warranty or warranty repairs. Othewise, you can shop online for a replacement at homedepot.com or sears.com

May 24, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Emerson Model MW8627W does not heat after changing fuse!


check the magnitron and capacitors one of this is bad

Sep 18, 2007 | Emerson MW8627W Microwave Oven

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