In the case of desperation , forced open the magnetron shield ( Panasonic Z1 type ) , found that the anode filter inductor coil has been black, there are signs of burning . Measured with a multimeter between their turn insulation breakdown paint has been shorted . With the same type of high-strength contempt envelope re- wound , after welding test machine power- yu , 90 seconds after the food has been normal heating furnace , indicating that the fault has been ruled out. Try another string on a diode rectifier removed, then boot , everything is normal.E7fservice manual download site

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