The aircraft is a large mug with stainless steel heating users boil, and soon found that the machine has a different sound and accompanied paste burnt smell, immediately stop working. The inspection found that the right side of the oven cavity mica charred and have holes, still a new mica heated exchange after. Suspect magnetron failure, remove the magnetron, the upper half was found burned like scalloped, for the same type of magnetron, the heat is normal. Alert the user, must not be placed in the furnace metal containers for heating food, it should be ceramic, glass and other containers.5s9service manual download site