Thang D Sugar Land , TX August 02, 2015 Appliance: Model KENMORE 721-80802400 My kenmore microwave doesn't generate the heat Search internet and the problem possibly comes from the magnetron. I ordered the magnetron from AppliancePartsPro. It comes quick. Replacing it it works well. AppliancePartsPro is a good store for DIY guys. Thanks. Thang Du Houston, TX Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes