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I have a brand new microwave. When you put the

I have a brand new microwave. When you put the microwave on high to heat food, the food does not get hot

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You need to contact Sears' customer service department. Don't fool around with this yourself because it could become dangerous. Call them before trying anything else.

Posted on Oct 03, 2009

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Posted on Jan 02, 2017

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1 Answer

Microwave doesnt heat food up?


Yes
You did probably has a bad magnetron.
Cost to fix it too high, get a new microwave

Feb 22, 2015 | Kenwood MW598 Microwave Silver Color with...

1 Answer

Maytag 4205baw runs but does not heat any items


Step 1:

Follow this steps and see the diagrams.God bless you

1)Diode




The high voltage diode converts the A/C power output of the transformer to D/C, doubling the voltage to nearly 5,000 volts. This high voltage powers the magnetron which emits the energy that cooks the food. If the diode burns out, a lower A/C voltage reaches the magnetron, which is not sufficient to power the magnetron. When the diode fails it is often visibly burned out. If it appears to be good, it can be tested with a volt-Ohm meter capable of testing diodes. High voltage diodes frequently fail and are one of the most common points of failure in a microwave oven. A regular meter with a diode checker will not work to check these diodes. You have to use a meter with a 9 volt battery or put a 9 volt battery in series with the diode to check it.

Door Switch




If the microwave does not heat, one of the door switches might be defective. Microwave ovens normally have three door switches, if any of them fail the microwave does not turn on and does not heat. Check the switches for continuity with an Ohm meter.

Magnetron




If the microwave oven doesn't heat the magnetron tube might have burned out. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. If the microwave oven is turned on when it is empty this can cause the magnetron to burn out. Once it is burned out it has to be replaced, it's not repairable.



High Voltage Capacitor




If the microwave doesn't heat the high voltage capacitor might be defective. The high voltage capacitor works with the high voltage diode to convert the output of the transformer to DC voltage and to double the output voltage. If the capacitor is burned out the entire high voltage circuit stops working properly. The high voltage capacitor can be checked with a special VOM meter which has a capacitance testing capability. Be aware that the high voltage capacitor can retain a charge of more than 3,000 volts and can injure or kill a person if not handled properly. Only trained technicians should perform this type of testin

High Voltage Transformer




If the microwave does not heat, the high voltage transformer might be burned out. Microwave ovens produce a very high voltage in order to power the magnetron antenna, which emits the energy that cooks the food. When a high voltage transformer fails it will usually arch and have a burning smell

Thermal Fuse




If the microwave doesn't heat the thermal fuse may have blown. It can be tested for continuity. Watch our fuse testing video for more information.

Thermoprotector




If the microwave doesn't heat the thermoprotector may have tripped. This is a safety device to prevent the microwave from overheating. It can be tested for continuity to see if it's blown.

Step 2:

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Step 3:

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Feb 06, 2013 | Microwave Ovens

1 Answer

High Pointe Microwave Em925rsl Will Not Heat Food Products and also produces a strong electrical odor


This is a classic sign of the magnetron failing, the most expensive part in the microwave oven.

Jun 29, 2012 | Microwave Ovens

1 Answer

GE microwave model JVM1750DM does everything except heat food. Worked this morning fine.


Chances are the magnetron has failed, "heats food" the other possibility is the high voltage capacitor and diode. Repairs will approach the cost of a new microwave oven.

Apr 19, 2011 | GE JVM1750DM Microwave Oven

1 Answer

Clouds of smoke started coming from the inside of it and we had to put it outside the smoke was coming out of the holes on the inside


It is time to replace the microwave oven, the problem you are describing is one or more issues, the high voltage transformer, high voltage capacitor, the magnetron, and the high voltage diode all play a key roll in generating the high voltage which translates into heating the food. The cost in my view will run high and would be put to better use buying a new microwave oven.

Mar 03, 2011 | Magic Chef MCD1611ST Microwave Oven

1 Answer

My smeg microwave will not heat the food ...... possible causes


If everything else is working but it won't heat the food, the causes are the magnetron "common failure" or the high voltage capacitor and diode can be a factor, the three work together to heat the food. Depending on the nature of repair it can be close to the cost of a new microwave oven.

Feb 27, 2011 | Smeg FME24X Microwave Oven

1 Answer

I have an old Goldstar microwave (MV1140T) that just stopped heating. The fan still works but the food won't heat up. What can I do?


The problem is caused by a bad magnetron, "common problem" or the high voltage capacitor and diode, all three work together to heat the food. The repair cost for parts and labor will be high enough to consider buying a new microwave oven.

Feb 23, 2011 | Goldstar MV-1501 Microwave Oven

1 Answer

The microwave runs like normal but doesn't actually heat anything. I went to heat something and it came out cold. Timer set just fine, it ran and sounded like it always does, turntable turned, it dinged at...


The most likely problem is the magnetron that heats the food, the other less likely is the high voltage transformer that energizes the magnetron. To replace either part with labor would be as much if not more than a brand new microwave oven.

Jan 19, 2011 | KitchenAid KHMS145KSS Microwave Oven

1 Answer

Microwave wont heat


When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem. To resolve this problem, you need the assistance of a qualified appliance repair technician.

Aug 03, 2009 | Microwave Ovens

1 Answer

I put food in my microwave (brand new) it turns on but the food does not get hot.


I put food in my microwave, it turns but the food does not get hot.

May 25, 2008 | GE Microwave Ovens

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