Question about Whirlpool MH7155XM Microwave Oven

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My mocrowave (whirlpool model MH7140XFB) started "arching" . It was as if there was medal in it. Cover plate in center of the roof of inside was source of arch. Lights were dimming during arch. I thought it was going to blow! Can it be fixed or does it need to be replaced?

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

Microwave Oven Basic Troubleshooting Tips

heatman101

Posted on Apr 02, 2011

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Where is the fuse for whirlpool microwave MH7140xfb-1 -


The support page for model MH7140XFB1 is here. Your exploded view with parts list is here.
There is a bulletin about door switch (interlock) support holders here.
It may or may not apply.

If a fuse is blown, it can blow for many reasons, and not every problem blows a fuse.

For disassembly info, you can watch the video at this site, or see these text files: http://www.microwavecontrol.com/safety.txt
http://www.microwavecontrol.com/disassembly.txt

Unfortunately, the door handle is not available separately. You would have to order the entire door assembly.

It is part number DE94-01381J and it runs $106.99 from Sears here. (prices subject to change)

William E. Miller
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

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Whirlpool model number MH7140XFB no longer heats


you either need a new h.v. capacitor or h.v. diode in the magnetron circuitry if you cant hear it cycle when it runs as in a low pitched hummmm when its drawing current to operate the magnetron tube, each part runs about $30 to $45 each,normally its the h.v. capacitor though

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There is an internal fuse. The cause for it blowing will have to be determined.
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Hi. I have a 1996 Built-in Whirlpool Microwave (#MH7115XBB-5) Once I set a time and power setting, this built-in microwave will start. After one (1) second there are sparking sounds and then a real strong...


You can usually find helpful exploded view diagrams here.

Thewaveguide cover (also called a spatter shield) is usually about thesize of a playing card and often held in place by a plastic rivet.

In some models it is a larger stirrer cover type made of thicker plastic in the ceiling of the oven.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.

If the cavity metal of the oven is chipped or charred, it will have to be sanded smooth and clean and dried thoroughly.

Then you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

If your waveguide cover is burned, it will need to be replaced. It provides important protection for the magnetron.


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1 Answer

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un plug it right away.

there are carbon deposit near the wave cover. the arching is coming from the magnetron to any exposed metal inside the unit or any carbon deposit since carbon is already conductive, it is sensing it as a metal.

remove and clean the interior of the microwave. polished and paint all exposed metal that you will find in the interior.

then test again the unit.

tnx 4 using fixya,

drcool

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You can download GE owner's manuals and installation instructions here.

Also for GEs, you can usually find helpful exploded view diagrams and order parts by entering your full model number here.

If yours is not a GE, please reply back with your brand and model number so we can help you.

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

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Need stirrer cover for microwave


THAT MUST BE A GOOD MICROWAVE. I'M SO SORRY I COULD HAVE GIVEN YOU MY MICROWAVE.I JUST TRASH MINE IT WAS A WHIRLPOOL TOO BUT IT WAS A 2002 WELL TRY HHGREG GOOD LUCK!!!!!!!!!!!!!!

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