Question about Whirlpool MH6150XMS Microwave Oven

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Microwave does not heat/cook

Yesterday my microwave -Whirlpool MH6150XMS (built in above stove) would not heat food. Everything else works fine, but the food is not hot when it comes out no matter how long it heats for. It is just 3 to 4 years old. It had a new motherboard about a year ago because lightening apparently struck it and the fan would keep running once the microwave finished a cycle. Suggestions? How hard is this to fix on a built in unit, or would it be best to call a repairman? Thanks.

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  • Anonymous Jan 24, 2009

    my whirlpool microwave would not heat up food no matter how long i let it run for. also the microwave continues to go when i open the door when there's still cooking time on the microwave. can you help ?

  • papaslack2 May 11, 2010

    microwave will not heat clock works

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  • Whirlpool Master
  • 8,820 Answers

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

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

Posted on Mar 20, 2008

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