Question about Microwave Ovens

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My haier microwave oven is not working every thing is ok except heating

Heating performance is zero

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  • Microwave Ovens Master
  • 12,223 Answers

Please make this test and fix it. God bless you


  1. Check the power diodeThis electronic component is responsible for transmitting current in one direction. If the diode becomes defective it will cause your microwave to not heat. Test the diode and replace it if necessary.
  2. High voltage capacitorResponsible for storing electricity, this part is a key component in any microwave. Remove, discharge, and test the capacitor to determine if it requires replacement.
  3. Damaged magnetronResponsible for generating waves and producing heat. When your microwave is no longer heating properly, replacement will be required.
  4. Thermal CutoffsExamine the thermal cutoffs on both the magnetron and the oven itself. Take off one of the leads and using a volt-ohm meter on RX1, check the terminals. If you get a result other than zero, replace the thermal cutoffs.
my haier microwave oven  is not working every thin - f4711d36-c189-487e-af05-09a1e9f7b684.gif

Posted on Nov 19, 2013

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4 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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jerryg50
  • 1667 Answers

SOURCE: Microwave Oven not Hot

Common faults or combinations of faults:

Main processor board is defective.

Control devices, thyrisistor or relay on the processor board has failed, and or the drive components to this device.

Defective safety switches.

High voltage power supply failure. Usually the high voltage rectifier, and or the power transformer, and or the main high voltage capacitor, and or the magnetron.


I suggest that you DO NOT mess inside your microwave oven. This is probably the most dangerious appliance in the home next to the TV set. There are very high voltages employed. If you do any maintenance on a microwave oven and if something is not right there is also risk of high frequency EMF radiation exposure.

After opening a microwave oven and doing service on it. We always did a ratiation test to make sure that there is no leakage while it is in operation.

I suggest you do some reading at the links below.

Microwave Oven Safety:
http://www.hps.org/hpspublications/articles/microwaveoven.html

http://www.fda.gov/cdrh/consumer/microwave.html

http://www.selfgrowth.com/articles/Microwave_Oven_Safety_Tips.html

Excellent article about microwave ovens:
http://en.wikipedia.org/wiki/Microwave_oven


Jerry G.

Posted on May 26, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: My Maytag MMV4205 Microwave Oven runs but does not heat

With the symptoms you have, I would most strongly suspect a shorted high voltage rectifier diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.

The diode is a fairly cheap fix, and the mag will cost more.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

If you don't find yours, or if you want to look at it without disassembling the oven, you can download it here.

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 (if it's not shorted, it's probably okay)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Posted on Dec 15, 2008

heatman101
  • 43501 Answers

SOURCE: in model spacemaker xl1800 no heating but all

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101
gfj

Posted on Sep 30, 2010

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make this test and fix it. God bless you


  1. Check the power diodeThis electronic component is responsible for transmitting current in one direction. If the diode becomes defective it will cause your microwave to not heat. Test the diode and replace it if necessary.
  2. High voltage capacitorResponsible for storing electricity, this part is a key component in any microwave. Remove, discharge, and test the capacitor to determine if it requires replacement.
  3. Damaged magnetronResponsible for generating waves and producing heat. When your microwave is no longer heating properly, replacement will be required.
  4. Thermal CutoffsExamine the thermal cutoffs on both the magnetron and the oven itself. Take off one of the leads and using a volt-ohm meter on RX1, check the terminals. If you get a result other than zero, replace the thermal cutoffs.
709a1f2c-f06b-4f8c-9cc2-d2d16f0b6f73.gif

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

Microwave Oven Basic Troubleshooting Tips

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

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