The hardest faults to find are those that occur only From time to time—intermittent events. They are often a result of terrible connections, dust, dirt, corrosion or simply broken wiring or connectors.Sau ?ó m?i l?a ch?n ra ??i bóng có ?u th? h?n ?? ??a ra d? ?oán c? th? chi ti?t v? k?t qu? tr?n ??u s?p t?i.K?t qu? x? s? mi?n B?c hôm nay th?