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Microwave just stopped heating food but seems to be operating otherwise. Fan , light, turntable, light all work. All components

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Old 02-04-2013, 07:28 AM
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Default Microwave does not heat
Model Number: MMV5156AAQ   Brand: Maytag   Age: 5 - 10 years   

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Microwave just stopped heating food but seems to be operating otherwise. Fan , light, turntable, light all work. All components (magnatron, transformer, capacitor, diode, and fuse) check out with ohmmeter. It has a distinct electrical burning smell when operated. I just examined this closely while operating and notice a distinct stream of smoke emanating from a small hole in the magnatron case adjacent to the connector.

What is this telling me? Has the magnatron failed? Has something else failed causing this problem?


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  #2 (permalink)  
Old 02-04-2013, 08:21 AM
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Default Diode Testing

Instructions on Tech Sheet in oven say a good diode should check "infinite" in both directions with ohmmeter on Rx1000. The instruction sheets provided by Simon to another Posting say diode test should indicate "continuity" in one direction and "infinite" in the other. Which is correct?
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Old 02-04-2013, 01:51 PM
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Default

Hi.

Check out this post diode testing


To check the diod for continuity your meter should be set for at least 100K ohm.


Sounds like you have a bad magnetron
Part number: 53001044

Part number: 53001044




Here are the breakdown diagram and 05-Internal Controls parts for Maytag MMV5156AAQ - AppliancePartsPros.com


Post the results.


Simon.
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Last edited by Simon / APP Team : 02-05-2013 at 09:41 AM.
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Old 02-04-2013, 07:56 PM
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Default Replacing Magnatron

Can I replace the magnatron from the front, i.e. without removing the microwave from the wall and disassembling the case?
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Old 02-05-2013, 09:41 AM
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Default

Hi.

Unfortunately you will have to remove it from the wall.

Simon.
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