首先将壶体插入接电插座。按下按键。用万用表R×1挡测量电源插头L、N两脚,正常的回路电阻约32.2Ω,若无穷大,说明电路断路。提起壶体,测量接电插头L、N脚32.2Ω正常,由此判断故障出在接电插座。拧出接电底板4支自攻螺钉,打下底板.发现接电插座L、N两脚的触点锈蚀。用细砂纸打磨触点使其光亮,试机加热正常,故障机修到这里,终于修好值得探讨。。 |
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