Question about Whirlpool MH1150XMQ Microwave Oven
While the turntable can be prevented from running while cooking if you turn it off with the keypad, that's probably not relevant here.
This problem is usually caused by either a bad upper door switch or a loose door switch mount, which are pretty simple problems to fix.
My help file on door switches is here.
There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.
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.
You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Oct 18, 2011
Testimonial: "William nailed it. The upper door switch would not work when the door was closed. Open it the smallest bit and it worked. The connectors were colored blue from excessive heat. The middle switch worked but had blue connectors too. I have ordered replacements for all 3. Thanks William"
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Posted on Jan 02, 2017
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