洛阳电脑维修主板不加电维修（国外英文资料）.docVIP

洛阳电脑维修主板不加电维修（国外英文资料） Luoyang computer maintenance technical support: mobile phoneQQ: 907777690 url: Motherboard failure of electricity, more common in the daily maintenance, actually in my maintenance experience, electricity, failure is the best of people just dont have the right in the process of maintenance maintenance process, so the idea is not correct, here to tell you about a motherboard not on the outline to the flow of electrical maintenance, hope to help you repair the motherboard correctly! One, appearance detection To get a customer to send the motherboard, to inquire the mainboard to the customer by the specific failure phenomenon, when not ask clear fault phenomenon, it is best not to electricity detection, to prevent unnecessary trouble, ask their time in, we can first make a general check on the appearance of the motherboard. Check the main elements on the main board for signs of burn and focus on the south The north bridge, I/O, and the power supply MOS tube, such as the discovery of obvious burns, first need to replace the burn part. Due to the occurrence of the surface color is deeper, mild burns may not be easily observed, this time, we can put the board be tilted Angle, to see the sun or the light. While seeing if there is a burn, it also depends on whether there is an irritating odor on the main board, which is one of the reasons why the mainboard is burned. Check whether the PCB has broken line, Angle, drop, etc. In the main board, such as the fault, the repair line and the repair work are first. The main direction of observation is the edge of the motherboard and the back. 2, the quantity before the ATX power supply If sure customers describe the fault is on the motherboard is not electricity, the first to use multimeter diode profile measurement motherboard whether there is a short circuit (gear, its method is to put the multimeter to diode red pens and grounding black pens and connect to test point, we can call it the measurem