Steve K Round Rock , TX September 29, 2014 Microwave quit heating Used the schematic diagram inside the case to check components and found the magnetron was bad. Ordered a new component and installed it. It's working great now. Great service and fast delivery from AppliancePartsPros.com at a reasonable price. 17 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours