1, after the shutdown, the high-voltage capacitor discharge, unplug the magnetron.7PUservice manual download site

2, x1 Europe with a multimeter resistance profile measured two feet filament, the resistance should be <1 ohm.7PUservice manual download site

3, measured either by x10k file filament feet on the ground are 'infinite'.7PUservice manual download site

4, unplug either end of the magnetron filament, power, power so that in the normal state for about two seconds, and immediately shut down (unplug), and the rapid measurement of high voltage capacitor to "ground" the voltage (measured with 1000V file ), should be 500V (such as varying duration, voltage values ​​are not the same) voltage and quickly drop. If so, replace the magnetron.7PUservice manual download site
 7PUservice manual download site
5, if the two are not normal, then directly for the magnetron. If three is not normal, you should check: HV fuses, capacitors, transformers, etc..7PUservice manual download site