The computer motherboard Nanqiao judges that there is a problem, how can it be replaced

It depends on whether it is virtual welding or damage to the south bridge, if the virtual welding is to repair the welding, if the south bridge is damaged, it is necessary to use BGA to replace it, it is recommended to go to the computer city to repair the motherboard for testing!

If you want to change the south bridge, you need a special tool to change it, such as the BGA anti-repair platform. Judging whether the virtual soldering or damage of the south bridge depends on many aspects, and it is also possible that other circuits of the motherboard cause problems with the south bridge, it is recommended to go to a professional motherboard repair shop for repair!

You yourself can't replace it, because the south bridge is directly welded to the motherboard, even if you want to replace it, you have to have the right accessories and equipment, go to a professional computer repair place to see.

BGA's full name is Ball Grid Array, which is a packaging method for integrated circuits using organic substrates. It has the following characteristics: reduced packaging area, increased function, increased number of pins, self-centering during PCB melt soldering, easy tinning, high reliability, good electrical performance, and low overall cost.

PCB board with BGA generally has more small holes, most customers BGA lower via design for the finished hole diameter of 8 12mil, BGA surface paste to the hole distance to the specification as an example, generally not less than the lower via hole need to plug the hole, BGA pad is not allowed to ink, BGA pad is not drilled.

The emergence of this technology has become the best choice for high-density, high-performance, multi-pin packaging such as CPUs, motherboard south and north bridge chips, etc. However, the BGA package occupies a large area of the substrate. Although the number of IO pins in this technology has increased, the distance between the pins is large, which improves the assembly yield.

Moreover, the technology uses the controllable collapse chip method for welding, which can improve its electrothermal performance. In addition, the assembly of this technology can be coplanar welding, which can greatly improve the reliability of the package; In addition, the signal transmission delay of the packaged CPU realized by this technology is small, and the adaptive frequency can be greatly improved.

If you need a BGA rework station for soldering, and there are a lot of problems to pay attention to when repairing, generally don't try it easily, it is easy to damage the pad of the motherboard, if the pad is broken, the motherboard will be scrapped, you need to find professional personnel to repair, or consult me!

There are several symptoms:

1.There will be a situation where the machine cannot be turned on directly.

2.There will be a situation where the machine keeps crashing after booting.

3.A blue screen situation occurs.

The Northbridge chip is the closest chip to the CPU on the motherboard, responsible for the connection with the CPU and the control of memory, and establishes the communication interface between the processor and the PCI bus, DRAM, AGP, and L2 cache.

The Northbridge chip provides support for devices such as CPU type, clock speed, type of memory, maximum capacity of memory, PCI AGP PCI-E slot, etc. The role played by the North Bridge is very obvious, playing a leading role in the computer.

How to determine if the bridge of the computer motherboard is operating properly:

1.The boot fan turns but the monitor does not display, it may be that the memory module is loose, wipe the gold finger with an eraser and plug it back in to see how the situation is, if the fault is still due to the motherboard.

2.Pressing the power button does not turn on at all or there is no response The motherboard power pin shorting also does not have any response, it may be that the north bridge is burned.

3.After booting up, the BIOS shows garbled characters, which is generally due to the fact that the capacitors on the motherboard are broken, and the maintenance cost is not high. Open the case to see if the capacitor on the motherboard is bulging or leaking, and call js to replace it.

4.Unplug the device other than the CPU and memory to turn it on, see if there is a display, and listen to the motherboard for an alarm sound, if there is no display and no alarm sound (except for no buzzer), it is very likely that the motherboard is broken.

5.Remember to check whether the power supply of the host is damaged, the inspection method is green and black shorting, the power supply is good if the power supply fan is turned around, and if it is not turned, the power supply is broken.