Tip & How-To about Microwave Ovens

Mircorwave Repair

When a microwave works normally but just doesn't heat, then this is a faulty magnetron. A replacement can be purchased at repairclinic.com or partselect.com which shows a picture of the magnetron, how to replace it and option to purchase it as well.
If the microwave is not getting power, then first remove the outside shell, then check the glass bus fuse. Make sure the thin wire inside the glass fuse reaches all the way across the fuse and is not broken. If fuse looks good, but still no power, Use a voltmeter and check the power from the power supply to the main circuitry board and make sure it is getting the correct amount of power. There is usually a label on the microwave that tells the DC voltage output.

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not heating efficiently; works but doesn;t heat as well


If it is taking longer to heat things than normal then it would appear the Magnetron to starting to wear out, this is a normal sign of inefficient power from the magnetron & would need to be replaced.

Dec 26, 2012 | KitchenAid Microwave Ovens

1 Answer

MICROWAVE POWER TEST Hi Everyone, In this tip I will show you how to easily test your Microwaves power. If it is sufficient, or if it is not heating effectively anymore. Non heating Microwaves are a common issue, and the most likely component that is faulty is the Magnetron - These days Magnetron's are quite expensive (usually about 50% the price of a new Entry Level Microwave). Low heating could mean a Magnetron becoming faulty (unlikely, as a Magnetron either works, or it doesn't work) Tools required: A Normal Glass (Heat-resistant, in other words Microwave friendly), Water (Room Temperature) , a Centigrade Thermometer (Can get this at any Pharmacy) Procedure: 1) Fill a glass with approx. 125 ml water. Use water at room temperature (from the tap), avoid using refrigerated water as this will work against the test we are doing. 2) Measure the initial temperature of the water with the thermometer (It should be between approx. 10 & 20 degrees). 3) Place the glass with the water about 2 cm away from the center of the Microwave Oven plate. 4) Heat the water at full power (The highest setting possible on your Microwave) for 70 seconds. 5) Stir the water (For 5 - 8 sec). 6) Measure the final water temperature with a thermometer. 7) If the increase is 45 degrees or more, then your microwave is heating sufficiently, if not it could mean replacing the Magnetron, or purchasing a new Microwave. I hope this guide as helped you. If it has, please rate it accordingly.

Apr 23, 2011 | Microwave Ovens

2 Answers

runs but doesn't heat replaced two fuses and magnetron still doesn't heat


Here is your free answer in under 10 minutes ...

You have a faulty door safety interlock switch. I wish you would have searched your problem here before you spent all that money on the magnetron. I have answered this question dozens of times here at this site.

When the oven runs but doesn't heat, more often than not it is nothing more than a faulty micro switch in the door latch system. When the switch doesn't work properly, the oven doesn't know the door is closed. If the door isn't closed, the oven will not energize the magnetron. Capacitors and magnetrons are **** and expensive answers but these items are extremely tough. It is the tiny contacts in the micro switch that can not stand the repeated abuse given them when we (read me in that number too) open the oven while it is energized causing a repeated flash across the contacts.

Thanks for your question @ FixYa.com

Aug 06, 2011 | Microwave Ovens

1 Answer

After electricity cut not heating food Dimention4 C703BPPQ


When a microwave works normally but just doesn't heat, then this is a faulty magnetron. A replacement can be purchased at repairclinic.com or partselect.com which shows a picture of the magnetron, how to replace it and option to purchase it as well.
If the microwave is not getting power, then first remove the outside shell, then check the glass bus fuse. Make sure the thin wire inside the glass fuse reaches all the way across the fuse and is not broken. If fuse looks good, but still no power, Use a voltmeter and check the power from the power supply to the main circuitry board and make sure it is getting the correct amount of power. There is usually a label on the microwave that tells the DC voltage output.

Jan 18, 2010 | Microwave Ovens

2 Answers

MY MICROWAVE DOEST HEAT, IT LOOKS LIKE WORK NORMALY BUT DOESN HEAT


pull your magnetron connector out and clean the both pins with alcohols or a metal cleaner and then fix it again and use. magnetron will work surely.

Oct 03, 2009 | Samsung MW8574W Microwave Oven

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