【 Weak current College 】 on some reference motherboard

With the growing integration of the motherboard, motherboard and more difficult, often require maintenance staff with rich professional knowledge and with the help of specialized digital detection device to resolve the problem. "Changing the motherboard motherboard damage" is the General computer users to solve a common approach to the motherboard failure. Now, a board price in the $ 600 to 1000, if a little small problem is abandoned, it would be a pity. In fact, some failure does not require specialized testing equipment, nor does it require advanced computer knowledge can fix. Here, I put in the maintenance of some motherboard repair instances are listed below for their reference computer DIYer.
# 1 a, CMOS parameter missing
Start-up tips "CMOSBatteryStateLow", sometimes you can start to use for some time to panic, this phenomenon is mostly insufficient CMOS power supply. For different CMOS power supply mode, take different measures: 1. welding type battery: the electric iron back welding a new battery on. 2. replace the battery: fastener directly. 3. replace the chip chip: best use of the same model chip replaced. If you replace the battery after long and has the same phenomenon, leakage is likely to be the motherboard, you can check the motherboard of the capacitance diode or damage, or you can skip lines using an external battery.
Second, the Board cannot use the keyboard interface
Connected to a good keyboard, post prompted "KeyboardInterfaceError" panic, unplug the keyboard, reinsert after starting the system, use the time keyboard does not respond, the phenomenon was mainly caused by multiple plug the keyboard, the keyboard interface board and remove the motherboard by soldering and welding-it-again; it may also be charged plug the keyboard, causing the motherboard had a power interruption insurance (on the motherboard is marked as Fn stuff) and put on a 1 ohm/0.5 Watt resistors can be.
3. integrated on the motherboard of your display adapter failures
In General, the computer power off, mostly motherboard memory not plugged in or display adapter failure. Have a great wall microcomputer, no ring 8, determine the display adapter failure. Open the case found that the display adapter is integrated on the motherboard, without your motherboard documentation. In response, to look closely at the motherboard jumper labeled shield off motherboard integrated display device, and then plug in expansion slot on the right shows the card after troubleshooting (some boards may be through the CMOS settings to enable or disable this feature).
4, integrated on the motherboard of your printer parallel port is corrupted
Brand machines and more than most 486 microcomputer printer parallel port, integrated on the motherboard, when using the machine's electrical signal cable seated printer most likely to cause damage to the parallel port on the motherboard. Encounter a similar situation, you can view your motherboard documentation, through the "prevent or allow the motherboard and interface features" associated jumper, set the "mask" the parallel port on the motherboard. Another way is through the CMOS settings screen, then ISA expansion slot plus a multifunction card.
Five, soft on the motherboard, hard disk controller damage
Starting from 486, most boards are integrated soft, hard drive controllers. If the floppy disk controller is damaged, or you can follow the above plus a multifunction card you can get (corresponding changes to the system board jumper or CMOS settings); if the hard disk controller, for different circumstances: If the hard disk is less than 528MB, can be multi-functional card; if not, you need to update the motherboard BIOS or using the associated software.
6. Cache corruption on the motherboard
Cache corruption on the motherboard, the performance to run software panic or cannot install software. Can the CMOS settings will be "ExternalCache" set to "Disable" in troubleshooting.
7. damage to switch power on the system board
Motherboard power supply for the switch power, the power tubes used as separator, such as damage, as long as the replacement of power tubes, capacitors, etc.