Question about Microwave Ovens

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Microwave NMy whirlpool microwave has been working fine for years. It has stopped heating, although it runs. Any ideas? Terry

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2 Answers

Re: Microwave

Could be magnatron, diode, capacitor, transformer, control board or switches. Be careful, high voltage can kill you. Mag is only suspect. It would be wrong to replace it without checking the other components. They are not hard to check but be sure to unplug the unit so you live thru the repair.

Posted on Mar 25, 2008

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Re: Microwave

Magnatron is suspect. Need to put a voltmeter on the input (primary) side to the high-voltage transformer (big heavy iron thing in there) Should be getting 120Vac when it goes to cook cycle. Don't touch the other (high voltage) side of this transformer. If the power is there, you are looking at replacing the magnatron. Its affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"

Posted on Jan 02, 2008

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But if you want, you can call Whirlpool and see what they suggest at 800-253-1301.

If this was helpful, please select YES to the first two RATINGS questions. Good Luck!

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MIcrowave oven stopped heating - Whirlpool MH6150XMS

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

- bad door switches or door switch mounts
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- problem or loose connection on the control unit circuit board
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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:

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

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.

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