Open the case , disconnect the high voltage circuit connections , with 500 multimeter R × 10k block detection voltage diodes , high voltage boost capacitor , were normal. Measured delay fuse 0.8A high pressure has been open , the resistance measured between the magnetron filament and the shell is 100Ω ( normal resistance should be infinite ) , indicating that the leakage has been damaged . Magnetron power test machine repair followed by a new fuse, the machine back to normal.CSXservice manual download site

Magnetron filament touch pole repair : damaged magnetron failure, is one of the common faults Repairs microwave oven. Prolonged use in wet environments , is likely to cause the output of the magnetron filament fixed insulation leakage fault occurs . How to make damaged magnetron change "waste " into treasure , by simple repairs on the plane will be able to re- use it? I used the service as follows:CSXservice manual download site
 CSXservice manual download site
1、Remove the magnetron , the shell can be seen after Lid open the output of the magnetron filament insulation and high frequency induction coil .CSXservice manual download site

2、the output of the magnetron filament outer insulation layer fixed small iron piece with the magnetron shell separated by Megger detection shell magnetron filament resistance , if it is infinite indicate can fix ; When is 0Ω , indicating magnetron internal breakdown , hitting pole, should be scrapped.CSXservice manual download site

3、has been tested and determined to return to normal after the magnetron with AB glue magnetron filament insulation from both ends of the shell can be kept after 4mm glue , AB glue on until after the test machine installed everything correctly.CSXservice manual download site