The fault is mostly caused by the side leakage of microwave, the collision during handling generally, due to vibration. As long as you can reinstall the adjustment magnetron support.UbWservice manual download site
In the adjustment process, pay attention to check whether the steel magnet magnetron under loose. If the magnet is loose, with the hexagonal screwdriver adjusted down magnetron magnet is not loose so far. In the adjustment process, do not adjust with plastic hammer percussion, percussion because it is easy to damage the magnetron.UbWservice manual download site