The toughest faults to locate are those who transpire only Occasionally—intermittent events. They are often caused by poor connections, dust, dirt, corrosion or just damaged wiring or connectors.Ca?ch ?ô?i ve? tru?ng th???ng x? s? mi?n Nam an toa?n nhâ?t chi?nh la? b?n hãy mang t?? ve? sô? ?o? ?ê?n t?i tru? s?? cu?a nha? ?a?i có ghi trên t