I have this same microwave and have already had 4 magnitrons put into the microwave in less than 2 years. The last time it caused a fire. The repairman said if we had run the microwave another 30 seconds the kitchen may have caught on fire! The appliance repairman said GE microwaves are known for their magnatrons going bad. The last time it went out - the 5th magnitron I was told the microwave can no longer be fixed. GE covers the magnitron for 10 years but the damage caused by the defective magnitron was so great that my extended warranty will no longer fix it.