The hardest faults to search out are the ones that occur only Now and again—intermittent situations. They can be due to lousy connections, dust, Grime, corrosion or just damaged wiring or connectors.N?p ít nh?t ten ?i?m thì b?n s? ???c nh?n t?ng th??ng t? h? th?ng nhà cái. L?u ý là ph?i ??ng ký nh?n khuy?n m?i ngay tr??c khi h?t th?i h?n 2