Question about Whirlpool MH1150XMQ Microwave Oven

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MH6150XHQ-1 Blows Circuit Breaker Randomly

See no trend as to when the breaker blows. Upon reset could be go for 2 days, or may pop 30 second or 1:30 into next heating session.

I just want to determine if its worth repairing, and if its safe. Neither seem logical based on age of unit (manufactured 11/2001).

Thanks for responses.

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  • Whirlpool Master
  • 8,820 Answers

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When it blows the breaker, as opposed to the internal fuse, quite often that's a defective door switch or door switch mount.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If you or a friend 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: http://tinyurl.com/yzjozk

There should also be a very helpful "mini-manual" hidden inside the unit behind the control panel. It's very helpful when troubleshooting.

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Feb 27, 2008

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  • Master
  • 579 Answers

The problem is from the high-voltage transformer being overloaded by something shorting it out. Either the magnatron or the high-voltage capacitor and diode. Replace the capacitor and diode then if still having problems, replace the magnatron. Its only affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

Posted on Feb 12, 2008

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My maytag microwave blew the ciruit breaker a several times last night. I reset the circuit breaker each time. Then the last time, I reset the circuit breaker and the microwave did not get power back....


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I would be really cautious about trying to use it anymore without checking it first for a direct short.

You need to allow the circuit breaker more time to reset, flip to off and give it 2 minutes, then turn it back on. You should feel the distinctive click, as well as hear it if it's working properly.

Circuit breakers can go bad after repeated failures within a circuit.

The outlet could also be damaged now, but normally it's the circuit breaker getting too hot with repeated failures.

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If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and
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We're happy to help and we appreciate your thoughtful rating of our answer.

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