It is best to buy special washing water for cleaning, or use non-conductive secondary distilled water to ensure that the washing water does not contain electrostatic ions. It is best not to use mineral water (containing too much ionic impurities) that we often drink, nor tap water. Such water is often weak acid or weak alkaline acid, which is easy to corrode the circuit board.

If you are not sure that it can be completely dried, it is best to unplug the battery and the integrated block on the board before cleaning. In the cleaning process, use a soft brush, and be careful not to damage parts, solder joints and capacitors.

Before drying, we can brush alcohol on the motherboard to speed up the evaporation of water. You can use a home hair dryer to blow dry the motherboard, or you can take it to an auto repair shop and blow dry it with a high-pressure air pump.

Matters needing attention

1. Before opening the chassis, please confirm the warranty period of all computer accessories.

Note: During the warranty period, it is recommended not to open the chassis of the brand machine for cleaning, because this means losing the right of warranty. During the warranty period, you can take the brand machine to the maintenance point and ask professionals to carry out internal dust removal.

2. Pay attention to handle with care when starting work, because all parts of the computer belong to precision instruments, especially the hard disk. If you accidentally fall to the ground, you will die.

3. Pay attention to the orientation of each patch cord during disassembly, such as hard disk cord, floppy drive cord and power cord, so as to restore it correctly. Tip: you can record the direction of these wires first, so as to avoid errors during restoration, which will cause the computer to fail to start normally.

4. When fixing all parts with screws, aim at the position of the parts first, and then tighten the screws. Especially the motherboard, a slight position deviation may lead to poor card contact; The uneven installation of the motherboard may lead to poor contact or even short circuit between the memory module and the adapter card, and even deformation and failure over time.

5. Because the integrated circuit devices on the computer board are mostly manufactured by MOS technology, this semiconductor device is quite sensitive to electrostatic high voltage. When people or things with static electricity touch these devices, they will release static electricity, and the released static high voltage will damage these devices. Pay special attention to electrostatic protection when maintaining the computer.

Tip: Before operation, you can wash your hands, touch grounded metal objects and release static electricity on your body. It's best if you can find antistatic gloves.