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What is a model number, and where do I find it?

Whirlpool Microwave Oven/Hood Combo Diode Replacement W11256462

This video provides step-by-step repair instructions for replacing the diode on a Whirlpool microwave oven/hood combo (Model #WMH73521CS6). The most common reason for replacing this part is if the microwave is not working at all.

All of the information for this video is applicable to the following brands:
Whirlpool
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How your microwave works:

How It Works:Microwaves
For additional repair advice and help finding your model number visit the repair help section of our website: Microwave repair help