Open the cabinet, with the primary coil MF-47 high-voltage transformer pointer table measuring only 2.5Ω, secondary (high voltage pole) is 120Ω, filament winding close OΩ, that the transformer has a problem, and with the VC9806 + digital sheet detection, the primary winding is 2.73Ω, high voltage winding of 115.85Ω, filament winding is 0.54Ω, this high-voltage transformer is good,zjUservice manual download site

Carefully inspect all components with a multimeter, including high-voltage capacitors, high voltage diodes, magnetrons are no problem, selector switches, fire control switch, timer switches were checked and found that the power plug both ends of the barrier, two suspected primary and secondary gated levy switch problem. Carefully remove the switch from the primary and secondary fixation, by measuring the internal contacts do have a problem. Carefully open the levy switch a look, contact oxidation serious. Then lightly with fine sandpaper to remove the oxide layer two switch contacts and points that transformer oil (the better), the switch repaired, into the microwave oven, power test machine, lamp shells, rotating turntable, adjust fire control switch heating properly, the service is completed.zjUservice manual download site