Whirlpool microwave MH7140XFB repair, "Replacing the Magnetron" - YouTube
Amazon.com: Whirlpool Microwave Magnettron, Gray : Home & Kitchen
Whirlpool Part# W10222507 Magnetron Unit (OEM)
Amazon.com: 10QBP1003 Microwave Magnetron 900-1000 Watts 4.35kV REPAIR PART FOR AMANA, ELECTROLUX, GE, KENMORE, MAYTAG AND WHIRLPOOL by ERP : Home & Kitchen