Question about Samsung SMH7178STD Microwave Oven

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Constant humming sound

I was heating food and we saw a cloud of smoke (no burning smell) when I opened the door. Now the microwave hums constantly even when not in use. Sound stops when we open the door Why is this happening? Its a 18 month old over the range Samsung

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  • mad dawg Dec 29, 2007

    My Kenmore over the range microwave recently started making a loud buzzing sound.  When that happens, it doesn't heat up the food, and appears to smoke and smell funny.  The microwave is about a year and a half old.  Any suggestions?

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The most common problem with ALL microwaves is the magnatron

Posted on Dec 30, 2007

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