The ƙarfe mai yin sulɓi za a iya farawa, kuma akwai overcurrent lokacin da aka ƙara wutar lantarki. Dalilan gama gari:

①Matsakaicin taswira ya lalace ko ya lalace,

②The inverter pulse transformer ya lalace ko ya lalace,

③Inverter SCR rauni mai laushi ko tsaka-tsaki,

④ Leakage na firamare jerin capacitor na matsakaicin mitar wuta,

⑤Makarfin dumama wutar lantarki yana da rauni mai laushi, kuma rufin zoben tanderu ko mashaya jan ƙarfe ba shi da ƙasa sosai ko ɗan gajeren kewayawa.