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烧鸡大法速修户户通 一台佳仕达户户通不开机,查电源板输出电压几乎为零,取下电源板正常,测量20V端子对地电阻很小,用备用电源电流2A多,确定20V对地漏电,后用烧鸡大法发现20V滤波贴片10UF电容发烫冒烟后拆下测量阻值接近0,换新户户通正常。 |
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