Don S Salem , WV July 26, 2019 Appliance: Whirlpool Microwave Hood Combo WMH78019HB1 Microwave not heating Apparently unplugging the microwave, troubleshooting (using google and finally found Appliance Parts), and plugging it back in recycled the microwave. It is working now. If the problem occurs again I will have a trouble shooting guide to identify the reason for the failure Read More... Do-It-Yourself Rating: Repair Time Estimate: 2+ hours Tools: Pliers, Screwdrivers