Question about Whirlpool MH7155XM Microwave Oven

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I have a whirlpool model MH7140XFQ and we got a guy to come and look at it and he said the Mag. tube and the circuit bars were broken. Which would be more expensive to change the broken things or just change the microwave

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He is referring to the magnatron tube which is the heart of the microwave. Probably more expense than you would want to put in to it.I would recommend replacement unless it is a high end model. Hope this helps

Posted on Jul 24, 2009

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I am not sure which part I should be buying so that I can replace it in my microwave. The roof of the microwave has been perferated due to catching fire. It seems the microwave would still heat something,...


It sounds rather like you need a new internal casing. Given that the oven would need to be almost completely dismantled, the cost will likely approach that of a new oven. You might be able to make it an insurance claim.

If you try to fix it yourself, be aware that microwaves usually have a high voltage capacitor in the magnetron circuit, and you MUST make sure this is completely discharged before handling it anytime.

I don't want to post any more information on that here, just to say you would be best off getting a cost estimate from a competent service tech.

Sep 01, 2013 | Whirlpool Microwave Ovens

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OPENED UP DOOR - PUT GLASS CUP IN TO HEAT WATER AND IT WOULDN'T HEAT. CLOCK IS ON AND LIGHT COMES ON. COULD THIS BE A FUSE???


Chances are that the high voltage circuit or possibly the magnetron tube may be defective...the fuse inside is for the whole unit..,.the magnetron tube is the device that emits the microwave radiation...you may need to have a qualified person examine the unit to see what is bad inside..I don't recommend unqualified persons doing this as there are potentially FATAL voltages inside needed to power up the mag tube(around 2100VAC)...If the service man tells you it is a mag tube then you may want to look in to purchasing a new micro..as mag tubes are very expensive

Mar 28, 2011 | Maytag Microwave Ovens

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I have a Whirlpool MH7140XFQ-0 Microwave and last night it stopped working with the screen showing F6. I unplugged it for over an hour and plugged it back in and it went right to F6. It tries to run if the...


"F6" on a Whirlpool microwave means you have a shorted cook relay on the control circuit board.

For model MH7140XFQ0 the control circuit board would be part number 4393919, which you can order from the Pros here for $132.23.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then you unplug the keypad (as per the photo below) take out the old board, then move the new circuit board into your frame.

34374fd.jpg

Some connectors on the relays may have a lock:

positivelock.jpg


Otherwise, we regularly repair these boards with our $39.95 nationwide service. Details are here.

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

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Microwave oven cooking time counter runs but does not cook? it is whirlpool MH 7130 XEQ; i also hear a huming sound whne it runs.


Sounds as if the magnetron tube inside has reached it's useful life...mag tubes are expensive and would outweigh the cost of a new uniot

Jan 22, 2011 | Whirlpool MH7140XF Microwave Oven

1 Answer

MH7140XFQ Fuse Amp


you need to look at the ends on your fuse and this will tell you the amperage you need to get for your particular unit,get them from a hardware store

Sep 22, 2009 | Whirlpool MH7155XM Microwave Oven

1 Answer

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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

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Apr 24, 2009 | Whirlpool MH7140XF Microwave Oven

1 Answer

Whirlpool MH7140XFQ


It's most likely caulk. It can usually be sliced with a razor blade.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Sep 21, 2008 | Whirlpool MH7155XM Microwave Oven

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