Question about Whirlpool MH7140XF Microwave Oven

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Whirlpool microwave model #MH1140XMQ-1. I needed to change the light bulb on the bottom of the microwave that shines on the stove below. I started to turn the light bulb and the bulb seperated from the alumn.base of the bulb. the bulb sparked and flashed. I turned of the circuit breaker removed the base of the light bulb. replaced the bulb and turned on the circuit breaker. not the microwave will not work. the clock on the microwave will tell time. when I select how many minutes I want the microwave to run the minutes will count down but the microwave will not run. no exhaust fan, no light no microwave heating. help-thanks

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  • 9,098 Answers

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid in about a week or so.

At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Or if you prefer, you can order a new control circuit board for it here for $140.10 plus shipping. (Just enter the model number as MH1140XMQ-1 without the dash).

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

The lights can can be inoperable or stuck on or no bright, too. Sometimes this will similarly affect the exhaust fan operation or inside light, too.

Feel free to contact me directly (and please remind me of your full model number from the tag on the unit) for more information & help.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

whirlpool microwave model #MH1140XMQ-1. I needed - 2812698.jpg

Posted on Jul 05, 2009

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Posted on Jan 02, 2017

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At our Web site, you can get details of our service, plus we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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http://www.microwavedisplay.com

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Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

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