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My microwave with hot heat the food - Microwave Ovens

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  • 251 Answers

Could be a lot of things... If it's quiet when you try to zap something, then suspect a blown fuse inside or a burnt wire or the relay board. If it's extremely noisy when you try to zap something, then suspect the Mag tube, HV diode, or HV capacitor. Also, the windings on your HV transformer could be burnt, but that's not as common as the above mentioned items.

Posted on Nov 17, 2014

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Posted on Jan 02, 2017

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MicrowaveSvc
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SOURCE: Whirlpool microwave MH1170xsy0 1000 watts

With the symptoms you mention, I would suspect:

- loose or corroded connection at the magnetron
- bad magnetron
- shorted high voltage diode

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.

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

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

Posted on Aug 21, 2008

  • 1 Answer

SOURCE: Microwave won't heat food.

My Whirlpool microwave, over the stove, stopped working when my son used it to heat his food and a heavy sound came out, like something exploded in it. When I check it, there was nothing broke. Everything works fine except that it does not heat. I will appreciate any help

Nate

Posted on Nov 09, 2008

  • 1 Answer

SOURCE: Microwave won't heat food.

built in 3/94 is it worth fixing how much for magetron

Posted on Feb 12, 2009

localwonder
  • 6784 Answers

SOURCE: Microwave seems to be operating but does not heat food. Popping sound was heard just prior to this problem. Popping sound no longer heard but still does not heat food.

Replacing the Magnetron will fix this heating issue you are having with this microwave. The Magnetron is the device that is responsible for the heating action.

Posted on Jun 03, 2009

garing
  • 998 Answers

SOURCE: micro works and outside gets hot but food does not

give more time

Posted on Aug 17, 2009

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2 slices of bread wrapped in paper towel microwave set on defrost set 35 seconds caught fire


Microwaves work by friction. They blast water molecules in the food so they move fast, just like rubbing your hands together makes them hot. Some types of microwave in defrost mode actually apply FULL POWER for a short period of time so to make the product warm to the touch. This heat then penetrates down to the core of the food, ensuring full defrost. In your case the heat was sufficient enough to heat the dry paper towel to set it on fire.
Bread is better defrosted on the low power setting as sliced bread is very thin. Items should only be defrosted on the defrost setting that are thick and need to be completely defrosted on the inside. Remember microwaves only penetrate the surface of food, making that hot. Thermal conduction does the rest.
You should never use paper towels in a microwave unless the instructions for doing the food say so. You wouldn't put a paper towel in a gas or electric oven, so don't put them in a microwave.

Feb 18, 2016 | In Microwave Ovens

Tip

Microwaves and how they work. ­T­he microwave oven is one of the...


Microwaves and how they work.

Caption
--> ­T­he microwave oven is one of the great inventions of the 20th century -- millions of homes in America have one. Just think about how many times you use a microwave every day:


Caption
-->
­

­You're running late for work, so there's no time to fix breakfast at home. On your way to the office, you stop to gas up your car. Inside the quickie-mart, you grab a frozen breakfast burrito and pop it in the microwave on the counter. Later that day, you have to work through lunch. By 3:00 p.m., you're starving, so you grab a snack-pa­ck of microwaveable popcorn from the vending machine and pop that in the break-room microwave. That night, after a really long day at work, you're simply too tired to grill out, so you dish up last night's lasagna and heat it up in the microwave...
As you can see, microwave ovens are popular because they cook food in an amazingly short amount of time. They are also extremely efficient in their use of electricity because a microwave oven heats only the food -- and nothing else. In this article, we'll discuss the mystery behind the magic of "meals in a minute" with microwave cooking.

­A m­icrowave oven uses microwaves to heat food. Microwaves are radio waves. In the case of microwave ovens, the commonly used radio wave frequency is roughly 2,500 megahertz (2.5 gigahertz). Radio waves in this frequency range have an interesting property: they are absorbed by water, fats and sugars. When they are absorbed they are converted directly into atomic motion -- heat. Microwaves in this frequency range have another interesting property: they are not absorbed by most plastics, glass or ceramics. Metal reflects microwaves, which is why metal pans do not work well in a microwave oven.

Microwave cooking ­You often hear that microwave ovens cook food "From the inside out." What does that mean? Here's an explanation to help make sense of microwave cooking.
Let's say you want to bake a cake in a conventional oven. Normally you would bake a cake at 350 degrees F or so, but let's say you accidentally set the oven at 600 degrees instead of 350. What is going to happen is that the outside of the cake will burn before the inside even gets warm. In a conventional oven, the heat has to migrate (by conduction) from the outside of the food toward the middle. You also have dry, hot air on the outside of the food evaporating moisture. So the outside can be crispy and brown (for example, bread forms a crust) while the inside is moist.

In microwave cooking, the radio waves penetrate the food and excite water and fat molecules pretty much evenly throughout the food. No heat has to migrate toward the interior by conduction. There is heat everywhere all at once because the molecules are all excited together. There are limits, of course. Radio waves penetrate unevenly in thick pieces of food (they don't make it all the way to the middle), and there are also "hot spots" caused by wave interference, but you get the idea. The whole heating process is different because you are "exciting atoms" rather than "conducting heat."
In a microwave oven, the air in the oven is at room temperature, so there is no way to form a crust. That is why microwavable pastries sometimes come with a little sleeve made out of foil and cardboard. You put the food in the sleeve and then microwave it. The sleeve reacts to microwave energy by becoming very hot. This exterior heat lets the crust become crispy as it would in a conventional oven.




­

on May 07, 2010 | Microwave Ovens

1 Answer

MAYTAG MICROWAVE OVEN ARCING FOOD ON PLATE, HEATS EXTREMLY FAST. PUT BABY FOOD (SWEET POTATOES ON A PLATE AND WITHIN 5 SECS THE FOODS BEGINGS TO ARC AND BURN


The magnetron is getting to hot and will eventually fail, especially when it is arcing, "a safety issue convern" the cause is the part mentioned above, or there is exposed metal on the inside cavity.

May 07, 2012 | Maytag 1.6 Cu. Ft. Over-the-Range...

1 Answer

Our new microwave heats the containers but not the food. Container is too hot to touch. Food "looks" hot, usually boiling - but food isn't even warm.


Check on the material the containers are made of. If they are not microwave friendly then they will cause problems.
Some materials are designed to "Roast" the contents by absorbing the energy.
Check with a Pyrex glass container and water. The glass should stay fairly cool.

Feb 01, 2011 | Whirlpool MH2175XS Microwave Oven

1 Answer

Our emerson microwave will not make anything hot.put in time for something to cook it runs fine but it will not make the food hot HELP!!!!! the sides and top and bottom of microwave are warm but food is...


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

Microwave Oven Basic Troubleshooting Tips

heatman101

Sep 14, 2010 | Emerson Microwave Ovens

1 Answer

My ifb microwave oven is getting hot outside while


Normally when u cook food in microwave the fod is cooked by microwaves, which means the heat is generated with in food. The temperature inside is never too hot and all the heat produced is absorbed with in the food.

On the other hand when the grill is switched on, a separate heatting element gets switched on. You can see this red hot element on the top side of inside of microwave. the heat from this element gets transferred to food through air circulation. But partof heat also gets transferred to the walls of microwave oven. This is the reason the wall feel hot during use of grill.

As i see ther is no problem with the microwave itself. Jut kep delicate thngs a bit away from the microwave.

Oct 17, 2009 | LG Microwave Ovens

1 Answer

Kenmore Microwave Won't Heat Food


The service manual is here.

Unless there's a bad connection at a magnetron terminal, I would say you have a failing magnetron.

It is part number 2B71165R and you can get it from the Pros here for $68.59 (subject to change).

For more free DIY and other help & advice, feel free to contact me via my site.

William E. Miller, AS-EET
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Mar 15, 2017 | Microwave Ovens

3 Answers

Microwave won't heat food.


built in 3/94 is it worth fixing how much for magetron

Dec 30, 2007 | Maytag MMV1153A Microwave Oven

2 Answers

Microwave does not heat food placed in the center of the turntable. Leaves a cold spot in the middle of the food.


This is normal. That's why I always recommend to my customers that the food be placed slightly off-center on the turntable. An analogy I refer to is stirring paint: If you stir paint with a stick by simply rotating the stick in the center of the can, it's far less effective than pulling the stick around an imaginary circle halfway bewteen the center and the edge.

Jun 09, 2006 | Whirlpool MH6150XMS Microwave Oven

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