Question about KitchenAid KHMS155LSS 1000 Watts Microwave Oven

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Microwave works but will not heat up - KitchenAid KHMS155LSS 1000 Watts Microwave Oven

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Possibly a fuse, diode, capacitor, hi voltage transformer or magnetron....

some of those had a five year parts warrantty on the magnetron which is the most common to fail besides a fuse but it is also the most expensive.. i hate to telll you this but most micros are disposable items these days because some of the labor and service money gets pretty close to the cost of a new one.... the only way to check those components is to drop it if its an over the range hangin model.... should be two or three bolts up above the hold it in place once those are removed it will lift up and out ,,, remove venting as well,, get two people some of those are heavy,, also be carefull if u try and open it up for serviceing u are going to have to ground the capacitor there is a high risk of shock those are live even when unplugged, and also most of the screws will require a security torx bit to rremove those hope this helps

Posted on Feb 03, 2010

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Posted on Jan 02, 2017

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microwave_diode.jpg Power Diode

A diode is an electronic component that readily passes current in one direction only and blocks the flow of current in the opposing direction. If your microwave's diode has become defective, your microwave will not heat and you will hear a buzzing noise. Test the diode to determine if this is the cause of your problem. Replace it if it is defective.

picturena.gif High Voltage Capacitor

A capacitor is an electrical device which stores electricity. A defective capacitor may be why your microwave is not heating but you are hearing a buzzing or humming noise. The capacitor will have to be tested to determine if this is the cause of your problem. A defective capacitor will have to be replaced before your microwave will work again. Make sure you discharge the capacitor before you test it, though.

microwave_magnetron.jpg Magnetron

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heatman101


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