Question about Emerson MW8987B/W Microwave Oven

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Keeps blowing breaker

I bought this oven for my office. I can pop popcorn in the oven and after the popcorn has cooked and been removed from the oven, the breaker will blow. My landlord (a commercial builder) has replaced the breaker and has had an electrician examine the circuits. Now we thiingk this may be the oven itself. Can you suggest anything to check?

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I have a kenmore microwave model 721.62649200. It stoped heating so I replaced the magnatron. It still did not heat so I replaced the rectifier and the high voltage capacitor. It still did not work and I replaced the three door switches. Before I replaced the switches all the lights, the display panel and the turntable worked fine. Now it will come on for a few seconds and then the house breaker blows. Anyone have any ideas what the problem is?

Posted on Aug 05, 2010

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Did you call Samsung's Service Division at 800-932-3837?

They may be able to give you a better number to call.

If you don't have them, you can download Samsung over the range microwave installation instructions here.

Please let us know what you find out.

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

Posted on Oct 24, 2008

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Posted on Jan 02, 2017

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Shut's off after cooking popcorn, only popcorn, won't restart for 15 too30min.


Sounds like the magnetron is over heating. Try putting a 4 0z cup of water in the oven along side the popcorn bag. See if this helps. Usually, the oven only runs 2 to 2.5 minutes for a bag of popcorn. You may have to experiment with the slightly different cooking time...

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My Dacor microwave does not pop popcorn on Sensor what is the problem


i had that problem. the solution is glass. my turntable is not glass and microwave popcorn must rest on glass to pop. just place a glass dish upside down and cook it on that.

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Have a kitchenaid microwave KHMS2040WSS brand new. Is there a way to set the popcorn sensor for a smaller bag? Right now it is set for 3.5oz and burns all the popcorn.


I have never seen a microwave that doesn't burn popcorn if you use the "popcorn" button. Why the manufacturers keep putting them on I'll never understand. There's nothing you can do change the presets on an oven since they are built into the controller. Instead of relying on the oven, you should follw the directions on the bag. These tell you to use high power, stay by the oven and stop the cooking when the time between pops drops to 1 or 2 seconds. Stored heat will continue to pop kernels for a bit, and you won't cremate your popcorn. You'll also avoid the possibility of the bag catching fire and damaging the oven, which I have seen several times. Finally, don't expect 100% of the kernels to pop. There wil always be a few duds, and extending the cooking time just results in burned popcorn.

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What should my powerlevel be on on my microwave because it keeps burning my popcorn


Your power level should be on high, but you shouldn't rely on the oven to time the cooking. I have yet to find an oven that won't burn popcorn if it has a preset POPCORN button. Press it and walk away and next thing you know, you've got charcoal. You should always stick around while making popcorn. Stop the oven and take the bag out when the time between pops drops to 1 or 2 seconds. The corn will continue to pop on its own for a bit because of stored heat, but you won't burn it. You'll never get 100% of the corn to pop, so don't worry about unpopped kernels.

Feb 28, 2011 | Emerson MW8777W Microwave Oven

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Microwave burns popcorn. what part is defective?


If the microwave functions normally while cooking everything else, but is only burning popcorn, there is no component problem that will cause this. You cannot adjust or replace any internal component to make it not burn popcorn. All power levels and program options are contolled by the consumer at the control panel. Refer to your owner;s manual for their recommendations.

If the oven is equipped with a popcorn feature button, it is programmed for a recommended power level and time. This is an ESTIMATED program feature. The manufacturers of both the oven and the popcorn will also give directions that tell you to turn the oven off when the popping slows to about a pop every 2 seconds. Failure to do so can result in burning.

If the microwave does not come with a popcorn feature button, the manufacturers of the popcorn have directions on the outside of the box that tell you what POWER LEVEL and TIME to set the oven on for the desired result. Again, the you still have to listen as the bag pops to ensure it does not burn.

In addition, on some microwave ovens, there is a feature that allows you to select the SIZE of the popcorn bag. Some popcorn manufacturers have smaller snack size bags that don't take as long to pop. You have to select the appropriate size to get the correct program option.

In any case, you never are to place popcorn in a microwave oven and walk away from it. All these program features are ESTIMATIONS based on manufacturers testing and recommendations for the best results. All microwave ovens are different and operate at different power levels. Your best judge is to listen as it pops.

I hope this helps you.

Dec 23, 2009 | GE XL1800 1100 Watts Microwave Oven

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Viking professional vmoc205ss convection Cooking POPCORN


You need to use one of the metal racks that came with the Viking microwave to raise the popcorn bag off the bottom of the microwave. It works great!

Apr 06, 2009 | Microwave Ovens

1 Answer

No homegrown popcorn in a microwave? why?


Popcorn is a food that has a very low moisture content, and microwave ovens rely on moisture content (water molecules) in order to cook.

If there is not enough moisture to absorb the microwave energy, much of the the energy is reflected back to the magnetron and damage it.

This is also what damages a microwave when it is run empty.

A simple solution is to add about 1/2 to 1 cup of water in a microwave-safe container in the back corner of the oven and cook your popcorn a little longer.

You'll have to experiment a few times to get the combination right for your particular model.

But allow our microwave about 15 minutes or so for the magnetron to cool down between popcorn cooking sessions.

Also, I would suggest putting a paper plate upside-down on the turntable tray, then putting the popcorn container on top of that.

This does two things: It keeps the extremely hot popcorn off the tray, reducing the chances it will crack, plus it raises the popcorn up so it will heat more efficiently.

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

Dec 23, 2008 | Microwave Ovens

4 Answers

Dacor Microwave/Conv Oven DCM24S


Placing the bag on an inverted glass bowl or pyrex casserole dish worked!!!!!  For 2 years, I have cursed my Dacor microwave for its inability to make popcorn (burns a hole in the bag, bag stays flat, almost no kernels pop, etc...)  I read the last suggestion to use the glass plate and I am now sitting with a bowl full of perfectly popped popcorn - with only 1 kernel unpopped.  The metal tray in the microwave conducts too many waves through the bag I guess.
Thanks for the solution!

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Magic chef microwave shuts down


We had the same problem with our brand new Magic Chef. Before going through the trouble of taking it back I called Home Depot. After talking to a Home Depot Rep I am told that the overheat sensor is under the glass plate directly beneath the popcorn bag. Popcorn gets very hot and the heat of the popcorn causes the sensor to shut the machine down. I would imagine this would be the same for a baked potato.
Very poor design.
I was told to put a microwave safe plate down and put the popcorn bag on it. This should help to reduce the heat and not trip the sensor.
A safety sensor is great, but not if it keeps tripping the machine and shutting down!

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