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大扭力扳手只有轻微启动声，如果自己维修，该如何检测确定故障
世达大扭力扳手出现无法启动故障，点击按钮只有轻微电机声音，通过检测发现电动锂电源无故障，无刷电机控制板出现故障，但是无法购买到厂家配件，想用其余品牌控制板代替，不知道是否能合适
电动工具电源维修大全141/417
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