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How do we test a faulty magnetron - Sharp R-1610 Microwave Oven

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ernesto cuadra

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Follow this steps and fix it. God bless you
go to the webpage:http://www.microtechfactoryservice.com/MagVisibleFailures.html and follow the test .sincerely.
how do we test a faulty magnetron - 93e42f5c-5d87-4215-9eee-d86b6d9e2a52.gif

Posted on Dec 13, 2013

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I have a Emerson MW1119B/W microwave. It has been doing just fine and all of a sudden it has decided not to heat any thing


Hello there,

When your microwave oven starts to zap, then eventually does not heat up, it means there is a problem inside the unit of the microwave. There are some parts to check inside the microwave before you can tell the exact component that is faulty and to know if replacement will do the job for you.

The three (3) main parts to be tested are the power diode, the high voltage capacitor and the magnetron.

But since all other components are working like the fan, light and clock, then it is most likely the magnetron. Here is how to test and replace the magnetron of your microwave.
HOW TO TEST THE MAGNETRON
Before you test this component, make sure your microwave is unplugged, and that you have discharged the capacitor.
There are two tests to conduct in order to determine whether or not a magnetron has become defective. If you receive results other than what are detailed below, you will have to replace your microwave's magnetron. Each test is described for you here:
TEST 1: Locate your magnetron and label each of the wires attached to it so that you know which wires are to be replaced where. Set your ohmmeter to the lowest resistance scale. Take a resistance measurement between each of the magnetron's terminals by touching each probe to one terminal each. Reverse the probes and take a second resistance measurement. Each measurement should read less than one ohm.
TEST 2: Set your ohmmeter to its highest resistance scale. Touch one of the meter's probes to a magnetron terminal. Touch the other probe to the metal magnetron housing. Take special caution to not touch the two probes together. This could result in an inaccurate reading. This test should produce a reading of infinity - indicating an open circuit.
Magnetron replacement
Have a certified and experienced appliance repair technician examine and replace your magnetron. This task is much too dangerous for the average layman to perform on his own.

Hope this helped.

Elect_Comp

Jan 07, 2012 | Emerson Microwave Ovens

1 Answer

Have a MMV4205BAB that my 84 yr old mom bought in 2007. Everything seems to work fine, But I does not heat. Can not fine a wiring diagram to see what everything does. If I measure the AC voltage at the HV...


Hello there,

When your microwave oven starts to zap, then eventually does not heat up, it means there is a problem inside the unit of the microwave. There are some parts to check inside the microwave before you can tell the exact component that is faulty and to know if replacement will do the job for you.

The three (3) main parts to be tested are the power diode, the high voltage capacitor and the magnetron.

But since all other components are working like the fan, light and clock, then it is most likely the magnetron. Here is how to test and replace the magnetron of your microwave.
HOW TO TEST THE MAGNETRON
Before you test this component, make sure your microwave is unplugged, and that you have discharged the capacitor.
There are two tests to conduct in order to determine whether or not a magnetron has become defective. If you receive results other than what are detailed below, you will have to replace your microwave's magnetron. Each test is described for you here:
TEST 1: Locate your magnetron and label each of the wires attached to it so that you know which wires are to be replaced where. Set your ohmmeter to the lowest resistance scale. Take a resistance measurement between each of the magnetron's terminals by touching each probe to one terminal each. Reverse the probes and take a second resistance measurement. Each measurement should read less than one ohm.
TEST 2: Set your ohmmeter to its highest resistance scale. Touch one of the meter's probes to a magnetron terminal. Touch the other probe to the metal magnetron housing. Take special caution to not touch the two probes together. This could result in an inaccurate reading. This test should produce a reading of infinity - indicating an open circuit.
Magnetron replacement
Have a certified and experienced appliance repair technician examine and replace your magnetron. This task is much too dangerous for the average layman to perform on his own.

Hope this helped.

Elect_Comp

Nov 25, 2011 | Maytag MMV5207A Microwave Oven

1 Answer

The model # is MH6110 XE. I started zapping occasionally and now doesn't heat up. Light, fan and clock still work.


Hello there,

When your microwave oven starts to zap, then eventually does not heat up, it means there is a problem inside the unit of the microwave. There are some parts to check inside the microwave before you can tell the exact component that is faulty and to know if replacement will do the job for you.

The three (3) main parts to be tested are the power diode, the high voltage capacitor and the magnetron.

But since all other components are working like the fan, light and clock, then it is most likely the magnetron. Here is how to test and replace the magnetron of your microwave.
HOW TO TEST THE MAGNETRON
Before you test this component, make sure your microwave is unplugged, and that you have discharged the capacitor.
There are two tests to conduct in order to determine whether or not a magnetron has become defective. If you receive results other than what are detailed below, you will have to replace your microwave's magnetron. Each test is described for you here:
TEST 1: Locate your magnetron and label each of the wires attached to it so that you know which wires are to be replaced where. Set your ohmmeter to the lowest resistance scale. Take a resistance measurement between each of the magnetron's terminals by touching each probe to one terminal each. Reverse the probes and take a second resistance measurement. Each measurement should read less than one ohm.
TEST 2: Set your ohmmeter to its highest resistance scale. Touch one of the meter's probes to a magnetron terminal. Touch the other probe to the metal magnetron housing. Take special caution to not touch the two probes together. This could result in an inaccurate reading. This test should produce a reading of infinity - indicating an open circuit.
Magnetron replacement
Have a certified and experienced appliance repair technician examine and replace your magnetron. This task is much too dangerous for the average layman to perform on his own.

Hope this helped.
Elect_Comp

Nov 21, 2011 | Whirlpool MH1140XM Microwave Oven

1 Answer

Don't heat consistantly micro or conv--sympthems-- no oven light no heat --occasionally ok--- ser. #113806


Hello there,

The problem could be from the power diode. A diode is an electronic component that readily passes current in one direction only and blocks the flow of current in the opposing direction. If your microwave's diode has become defective, your microwave will not heat and you will hear a buzzing noise. Test the diode to determine if this is the cause of your problem. Replace it if it is defective.
Also a capacitor could be faulty. A capacitor is an electrical device which stores electricity. A defective capacitor may be why your microwave is not heating or working intermittently. The capacitor will have to be tested to determine if this is the cause of your problem. A defective capacitor will have to be replaced before your microwave will work again. Make sure you discharge the capacitor before you test it, though.
Finally, the magnetron could be faulty. A defective magnetron is the third possible cause of why your microwave is not heating. Test your microwave's magnetron. Replace it if it is defective.
You will have to test them and replace the faulty component amongst the three factors.
Hope this helped.
All the best.
Elect_Comp

Oct 31, 2011 | Sharp R-1870 Convection/Microwave Oven

1 Answer

MY MICROWAVE DOESNT HEAT UP FOOD JUST COOKS


Hi.

The wave emitting part inside the microwave oven is called the magnetron. The waves emitted by the magnetron generate heat in food. When the microwave is running, turntable turns and light comes on but there is no heat it means that either the magnetron is faulty or the magnetron is not getting power. When the magnetron is not getting power parts such as the high voltage diode or capacitor must be tested or replaced. Testing and repair must be carried by a technician. Here some general troubleshooting: http://www.fixya.com/support/r2096491-microwave_works_normally_but_not_heat

Regards.

Ginko

Sep 07, 2011 | Microwave Ovens

1 Answer

The problem is no heating but the time is counting. Model MW840WF


If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short.The processor seems to work but there is no output trigger or switch on of the magnetron. can be failure of the relay or the magnetron. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.

Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues, you can use the microwave safely

http://www.gallawa.com/microtech/mag_test.html

Jun 22, 2011 | Samsung Microwave Ovens

1 Answer

My microwave produce less heat


If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.

Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues, you can use the microwave safely

May 11, 2011 | LG Microwave Ovens

1 Answer

My danby microwave model dmw748ss the screen has like a 4 sign and will not do anything cannot punch in any numbers or nothing just won't work


The customer control pad can be faulty. So this must be confirmed with a test using a multimeter in the connections to the main board. If microwave is not worrking at all and there is no action please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.

Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues, you can use the microwave safely

Oct 09, 2010 | Microwave Ovens

1 Answer

Sharp over the range microwave, no heat when turned on an a loud humming noise


HI, there are two issues here. the Magnetron tube and the noise filter has failed.

Just to make sure of the Magnetron failure, expose the device and, check the Magnetron temp fuse located near the device. this fuse will show no continuity when tested if faulty. if it testes out ok, replace the magnetron.

Jun 19, 2009 | Sharp Microwave Ovens

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