microwave oven failing?


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Old 06-02-21, 08:47 AM
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microwave oven failing?

Our countertop microwave oven all of a sudden is not heating up the food normally, quickly as usual. Instead of cooking my oatmeal in 1 minute 50 seconds, it takes over 4 minutes now. I did not change any settings or do anything different. I've read that if it is not heating at all, the "magnetron" may have failed. But ours does heat, just not as quickly as before. So, wonder what the deal is.
 
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Old 06-02-21, 09:47 AM
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The magnetron is a tube and can go bad.
It's not typically a user replaceable part and it can be fairly expensive.

The magnetron operates at one "speed" for lack of a better word. What is done is that the mag is cycled on and off for different heating speeds. Usually if you select a lower temperature.... say medium..... you'll hear the mag cycle on and off. Do you hear it cycling ?
 
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Old 06-02-21, 10:06 AM
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Usually if you select a lower temperature.... say medium..... you'll hear the mag cycle on and off. Do you hear it cycling ?
I'll try it on the "defrost" cycle I guess. I know when I've tried using that mode before I've noticed I can hear it "cycling".

When the mag goes bad does it just typically fail completely, or could it partially fail, and cause the behavior I described with our oven, (prolonged heating/cooking)?
 
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Old 06-02-21, 10:20 AM
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Usually it just fails. I don't recall seeing a low output issue in a long time.
There are also high voltage parts that could be breaking down.

You have to weight the cost of possible parts, safety and replacing the unit.
Most countertop units are inexpensive.
If it's a combo hood/microwave.... those are considerably more.
 
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Old 06-02-21, 10:25 AM
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ok

Ok. Thanks that helps. It had a good life.
 
 

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