Will first transformer high voltage side of the broken, in insurance, do not burn insurance, suggests that there is high side component failure, measuring high voltage capacitor, resistance of 10 m Ω after charging and discharging, normal, measured again magnetron filament resistance of enclosure of 0 Ω, filament of magnetron in shell short-circuit, change LGGAL101 magnetron after boot, use clamp machine table test current for 4 a, a glass of water inside the furnace is heated in two minutes, the repair is completed!xniservice manual download site