Nikki Jo D Ramona , CA May 03, 2020 Won’t heat anymore Bought a magnetron and a diode. Spent 2 hours putting it in and voila, it works as good as it did when we first bought it 15 years ago. It is a convection oven so it would have cost us $2000 for a new one. Thank you Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours