Alan K Sunrise , FL October 05, 2015 Appliance: LG Microwave Oven LMV1630ST Lg Microwave/Hood Combo Lmv1630st: Above range microwave not heating at all. How to replace Microwave Magnetron. LG Help-line said probably a failed magnetron, but since out of warranty,referred me to an authorized LG repair service. They wanted $79.95 service call to come out & diagnose problem. I ordered replacement magnetron for less than cost of a service call, Plus the part was delivered next day! Works like new again. Happy wife = happy life! Notes for DYI-ers: 1.Be careful removing over the stove microwaves--get help,they are heavier than you think. 2.Unplug microwave for 48 hrs, carefully disconnect capacitor leads, and CONFIRM capacitor is discharged before doing any electrical repairs in a microwave~!! 55 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours