Question about KitchenAid KHMS155LSS 1000 Watts Microwave Oven

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Our KitchenAid microwave works well, heats food, etc., but makes a constant loud and annoying humming noise (close in frequency and tone to the hum of cold fluorescent tubes) even when not in use. When the humming noise first started (around six months ago) I started unplugging the appliance from the wall when it began humming. When plugged back in the hum was inaudible for a while, but would slowly increase in volume over a period of hours. This time period got progressively shorter. Now the unit hums whenever and as soon as it's plugged in. Thanks for any opinions.

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  • 389 Answers

Hi it could be a bad neutral connection on your plug or inside on your high voltage transformer check the plug for burning and try plugging it in a different socket

Posted on Nov 07, 2011

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