31:18

The old man is often electried by the range hood. A repair was actually the cause of the ground wir

9:36

Switch triggered building gate jumped; failure preventable! -Chengyang Circuits

14:10

Cust confused why circuit check 1st & open equip. - Chengyang Elec. Circuit

9:05

12v开关电源无输出，简单的一个故障，不用花一毛钱就能修好

3:02

网线拽不动不等于更换不了

13:36

Broken 2yrs tripped for repair shocking on-site test severe leakage! [Chen Yang Elec.]

16:03

车子打不着火？搭电也不行？试试这个操作就可轻松搞定！---车辆在停车场打不着火，搭电没反应，轻松搞定，启动机，继电器，电池，电线，氧化物，故障排查，打火，搭电，由简入繁，操作简单，DIY，原理分析，

8:34

插座没有电，看上去一切都是正常的，原来问题住在这里。