Question about Whirlpool MH1150XM Convection/Microwave Oven
HI. in most cases, this will lead to a failed Heating device(magnetron tube).It would be wise to check the Magnetron cutoff fuse to be sure of its integrity. if the fuse is blown, simply replace it. if the fuse continues to show continuity, replace the magnetron.
(((The fuse is located inside the unit along side the magnetron)))
Posted on Sep 25, 2009
There are three solutions....
1 ) 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.
2 ) 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.
3 ) Magnetron..
A defective magnetron is the third possible cause of why your microwave is not heating, but you can hear a buzzing noise. Test your microwave's magnetron. Replace it if it is defective.
Thanks for contacting fixya.com
Posted on Sep 24, 2009
If the housing of the unit isn't too difficult to remove (normally 3-5 Phillips screws around the rear edge), with the unit unplugged of course, check for a user replaceable fuse inside. The magnetron is separately fused and fuses can fail due to metal fatigue. It will be high amperage; 10-20 amperes and many hardware stores will have them. BTW, there is no residual radiation from a magnetron that isn't operating.
Posted on Sep 23, 2009
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Posted on Jan 02, 2017
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