The toughest faults to find are those who occur only Now and again—intermittent functions. They may be due to poor connections, dust, Filth, corrosion or simply broken wiring or connectors.N?u may perhaps m?n trúng th??ng x? s? mi?n Trung hãy ??n ngay m?t trong hai ??a ?i?m sau ?? ??i th??ng: ??i lý vé s? ho?c công ty x? s? ki?n thi?t t?i n?