Oven lights, turn the dial , indicating low voltage circuit is working properly, no heating elements are mostly related to the high voltage circuit damage caused .43Nservice manual download site
 43Nservice manual download site
43Nservice manual download site
Open Insurance plastic pipe, check H · V · FU2 is blown , indicating the presence of high voltage circuit short-circuit fault . The second step to check C, VD, when the MT, the appearance of cracks found VD , put the multimeter R × 10K block measuring high voltage diode , measuring forward resistance is 0Ω, normally about 130KΩ; measure reverse resistance of 0Ω, normal is infinity (∞).43Nservice manual download site
43Nservice manual download site
According to the measurement results , indicating a short circuit caused by VD breakdown voltage winding current increases , the H · V · FU2 blown , leading to heating . Need to change high voltage diodes, replace as follows:43Nservice manual download site
43Nservice manual download site
    1, the first capacitor discharge43Nservice manual download site
43Nservice manual download site
2 Unscrew the capacitor bracket screws , then tighten the grounding screw high voltage diodes , high voltage winding pull plug wire terminal voltage doubler rectifier assembly is removed as shown in Figure 4 .

 2    1 2 Next Last