- T?t c? các thông tin ??u ???c ch?n l?c k? l??ng và t?ng h?p t? nh?ng ngu?n tin c?y nh?t.The hardest faults to search out are those who come about only once in a while—intermittent events. They are often caused by bad connections, dust, Grime, corrosion or just broken wiring or connectors.Ngoài ra, ng??i ch?i s? ???c h??ng ?ãi ng? t??ng t?