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万用表如何测量LED灯好坏
更新时间： 2020-09-23 00:00:00  

万用表测LED灯好坏的方法如下：

1、将万用表上的旋钮拨到二极管（蜂鸣）档，并将红黑表笔插在万用表的正确位置；

2、观测灯管，灯管有四脚和二脚两种，测量时若是四脚则选测中间两个脚，将红黑表笔分别接触到所需检测的两个引脚上，若有蜂鸣声且万用表红色led灯亮，则灯管好，否则灯管已坏；

3、测量时若是二脚，则拆开灯头，会发现有四根导线，之后重复步骤二即可。

关键词： 如何 测量 led 好坏

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