Fuse was blown to observe all black. Meanwhile fuse glass tube also burst. Description severe short circuit fault. Analysis of the circuit components and cause a short circuit may occur reasons fried fuse should be: at the beginning (1) power transformer secondary short-circuit; filament shorting (2) of the magnetron; (3) high voltage capacitor shorted; (4) high voltage diode is shorted. To determine the fault coverage, based on the experience 1,2,4 items were open, power on, and the bombing of the test machine used protective 3A fuse. Thus, determining fault in high voltage capacitor section (not necessarily measured with a multimeter). After 1.05μF/2100V capacitor replacement power microwave work properly. One end of the capacitor is a three-connector at one end of a connector. And now two different ends of the capacitor are connected in joints, so please pay attention to the capacitor connection. Note that when the direction of cable disassembly. The aircraft still a protection diode, the current Microwave has no such element.dkFservice manual download site