Question about Microwave Ovens

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The microwave doesn't heat. Other functions work, but it just doesn't cook. It started to only work every few times I tried, but now it doesn't work at all. Is this a quick fix? I'd hate to pay for a repair, and only to discover that it needs to be replaced.

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I had the same trouble. Check your door interlock micro switches. There are probably two switches on the right side but this is not a law. You are probably like me, you open the door while the microwave is running. When you do this, there is power at those switches and they arc. Mine burned up the points inside. I replaced them both (about $4.00 at the Shack) or get from the manufacturer. There is the possibility you have an adjustment problem but I'd check the switches first.

Posted on Sep 07, 2009

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1 Answer

Everything on microwave works except it doesn't heat or cook. what is the problem?


IT'S THE MAGNITRON - CHEAPER TO BUY NEW THAN REPLACE - SORRY.

Jan 09, 2013 | Microwave Ovens

1 Answer

Ge adora over the range microwave, runs but does not heat


Microwaves contain high-voltage parts that can be deadly, even when unplugged, unless handled correctly. Unless you are a qualified expert, don't attempt to get into its inner workings.

First, use this water method to double-check if there is actually an issue with your microwave not heating:

1. Fill a glass measuring cup with water to the 1-cup mark.
2. Set the microwave to heat on full power for 1 minute.
3. Repeat the process with fresh water a handful of times.
4. If the water is not consistently warm, your problem is confirmed.

If your microwave is failing to heat correctly, you may be on a previously programmed setting. Press the STOP/CANCEL button and start the heating process again, but use a higher power setting. This may correct the problem.

If the microwave senses an open door, it will not run. Check to see if a defective or loose door-safety interlock switch is to blame. If tightening it doesn't work, a replacement may be necessary.

Did you know? Neglecting to hit the STOP/CANCEL button on the microwave before you open the door to remove your food damages the safety switch over time.

Microwaves installed above the range may be affected by steam from cooking. Condensation collecting on the circuitry can interrupt heating. Allow the circuitry to dry out by avoiding stovetop cooking for a few days. If you're still having the same problem, it could be a loose connection in the circuitry or a faulty door safety switch.

There may be an issue with the circuit board and its connections, and that work is best left to a qualified professional.

A buzzing or humming microwave that emits a faint burning smell could signal a damaged magnetron, high-voltage capacitor or diode. Replacement magnetrons are expensive, so if a service professional determines that's the problem, you may be better off buying a new microwave. Capacitor and diode parts cost much less, but remember, you'll be paying for the expertise to have them installed correctly and safely. It may still make more sense to buy a new microwave, especially if it's a simple countertop model.

For more troubleshooting steps and simple solutions, read Microwave not heating. I hope this helps!

Sep 28, 2012 | Microwave Ovens

1 Answer

Emerson microwave not working 900 watts


The Emerson MW8999SB 0.9 cu. ft. 900 watt Microwave Oven is relatively compact, and certainly inexpensive, but doesn't skimp on functionality. We were surprised at all the options you get with this little microwave. It's only 20 inches wide, 11.3 inches high and 16.1 inches deep yet. The interior can still accommodate a regular size dinner plate or small (10-inch-square or round) casserole. Plus, there are 10 power levels, eight one-touch function buttons, six Express Cook settings, timed and automatic defrost options, and a rotating glass turntable to circulate the food for more even cooking.

We were very pleased with the performance of the Emerson MW8999SB. It did a fine job heating water for tea, cooking a couple of baked potatoes, reheating leftovers and steaming fresh vegetables. Even the automatic defrost proved surprisingly efficient, letting you enter the weight of the item(s) to be defrosted (4-100 ounces) for easy operation. Chicken breasts were almost fully defrosted after one cycle. We needed to stop and separate the food pieces to finish the defrost cycle.

The unit is styled mainly in black but has stainless steel trim around the door and control panel. The smooth touchpad control panel is attractive and easy to wipe clean. We loved the one-touch Express Cook buttons, which let you activate the unit at 100 percent power for 1-6 minutes, by pressing the corresponding number pad. We also appreciated extra touches such as the Start/+30 sec. button, which can be used to start the oven or add an extra 30 seconds each time it is depressed.

It's hard to go wrong when the functions are so simple. The only tricky part was identifying certain codes used on the display screen. When changing the power level, for instance, PL10 is displayed on the screen. Pressing the button additional times lets you toggle through the different levels. Likewise, the Auto Cook settings may need to be pressed multiple times to obtain the correct weight or portion for the food being cooked.

We were amazed that a machine costing so little also offered two-stage cooking, which lets you start cooking (or defrosting) on one setting and finish on another. All in all, the Emerson MW8999SB is an excellent value.


Pros: Touchpad controls, eight one-touch function buttons, six Express Cook settings, two-stage coking option
Cons: Limited interior capacity can only accommodate dishes up to 10 inches, no sensor

Jul 29, 2012 | Hotpoint RVM1435 Microwave Oven

1 Answer

I tried cooking with the convection function in my dacor DCM24 microwave. now the microwave function will not work. the fan comes on, but the turntable doesn't move and there is no heat.


This is almost certainly a bad secondary interlock (bottom door switch) or its mount.

See my help file on door switches here.

You can download the service manual and parts list free from our site.

You can order parts by entering the Dacor part number here.

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

Oct 28, 2011 | Dacor DCM24 Convection/Microwave Oven

1 Answer

Not heating


Hello


Power Supply

Check whether there is a proper power supply. Look to see whether the cord is connected to a grounded 3-prong outlet and the cord is fully plugged in. If the electrical system is built-in and no power cord is visible, replace or reset the household fuse or circuit breaker.

Microwave Functions

Some basic microwave operational steps may affect whether the microwave is heating. Open and close the microwave door, as the unit will not function with the door open, and push "Stop/Clear" to cancel any previous settings, such as the timer, which do not heat the microwave oven.

Setting the Microwave

Once the power to the microwave has been reset, or verified as working, and the microwave is ready to run, select a new cook cycle and press "Start" to see if the microwave begins to run and cook food as expected. Allow the food to cook for the alloted time and then open the microwave door and check to see if the food has cooked or heated. Choose a longer cooking time and restart the microwave if food is heating but is cooking slowly.

Repair

If all efforts to troubleshoot the function and power to the microwave still do not get the appliance heating food as expected, there may be a repair issue that needs to be addressed. Contact professional technician for advice.

Oct 05, 2011 | Sanyo Microwave Ovens

1 Answer

My microwave/convection oven will not heat up, but the lights and clock work


Hello

Look to see if the microwave power cord is securely plugged into a live power outlet. The power cord cannot be loose for proper function. Move other appliances to a separate outlet if possible.

Replace or reset the circuit breaker or fuse if blown or tripped.

Unplug the microwave and wait several seconds before plugging it back in to reset.

Make sure there are no current functions in use. Press "Clear/Off" to cancel any other settings or programs already in progress.


Select a new cooking program and then select "Cook Time." Make a time selection and press the "Start/Pause" pad to begin cooking.

Oct 04, 2011 | Microwave Ovens

2 Answers

Just purchased our Cuisinart Stainless Microwave, plugged it in, read the operational instructions and set the clock. As a test, we tried to heat water....does not work. Any suggestions?


Yes! Take it right back to the store for exchange, cause could be a bad magnetron "that heats food" and a couple parts that work together with the magnetron,or there may be issues with the keypad, none of these will be cheap to fix.

Jan 30, 2011 | Cuisinart CMW-100 Microwave Oven

1 Answer

Last year i bought microwave model no:black & decker from dubai. but my family members does not know to use all touch buttons. once my daughter tried to prepare fry some vegetable...


It is important that you attend a class on microwave cooking as it is important that during the process of microwave cooking it is the conduction in the food -- the molecules are agitated with microwave energy to heat up individually as the vessel does not heat.-
So the TIME and the POWER SET ON THE MICROWAVE is very critical which must be learned.
Start by keeping a glass/cup of water and choosing 1 minute for warming . Now watch and advance the time as you notice the heat building up.
.

Dec 23, 2010 | Microwave Ovens

2 Answers

Microwave is not heating1


Did someone spray cleaner directly on it, especially around the keypad area??

The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

If not, then you might leave the door open overnight and see if that helps it dry out, then try the rest again and try cooking again.

Otherwise, please write back with your brand and model number if you need further help.

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

May 27, 2008 | Magic Chef CMV1000B Microwave Oven

1 Answer

Vibrating noise when cooking


In order to try to set your mind at ease I will have to explain the Basics on how a Microwave Oven Functions.
When a Microwave Oven is set to COOK ...START. It cooks at 100%. There is no lowering of the heat as with a Range ( Cook Top) Control. So in order to do the other things such as DEFROST, WARM, or anything other than 100% COOK. A COOK ON- COOK OFF system was utilized. To DEFROST, the Microve COOKS at 100% for 30% of the TIME, then IDLES for 70% of the TIME. COOK ON 30% of the TIME, COOK OFF 70% of the TIME = DEFROST This is why you can hear the CYCLE. More power is required during the ON CYCLE, thus the lower vibration. The Vibration occurs when the High Voltage Transformer is turned ON ( COOK ON).
The VIBRATION seems to have got louder with age. This is somewhat normal as there is a vibration from the High Voltage Transformer present every time the Microwave is used. screws and other metal parts seem to get loose with this vibration. There is no solution, unless you can tighten EVERY screw, nut, and bolt in the unit.
Sorry!

Dec 07, 2007 | Kenmore 62642 / 62644 / 62649 Microwave...

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