1. Do not insert the power cable port into other ports. Insert and pull out the cable horizontally to prevent the port from loosening. Do not plug and unplug serial ports, parallel ports, PS/2 and other interfaces.

2, check whether there is any problem with the capacitor resistance inductance, such as the capacitor bulge, it is best to replace it in time to avoid leaving hidden dangers. Pay attention to the power cord, wrap the laptop power cord as much as possible, so as not to break the internal cable to form a break. If the external power supply is not powered, then you can plug in the notebook battery to try, if the notebook can start normally, there may be a problem with the notebook power cord or notebook power adapter. Then use a multimeter to detect whether there is a problem with the laptop power cord to simplify the difficulty of troubleshooting, and do not try to open the laptop power adapter housing at the beginning.

3, strong chemicals: do not use strong chemicals, cleaning agents or strong detergents to clean the charger. To remove stains on the surface of the charger, you can scrub cotton with a small amount of anhydrous alcohol.

4, waterproof and moisture-proof: as an electronic product, accidentally entering water or being exposed to humid air when not used for a long time will cause different degrees of corrosion or oxidation of its internal electronic components.

5, anti-fall and shock-proof: the mobile phone charger is actually a fragile part, the internal components can not withstand beating.

6. Discharge static electricity during cleaning: clean the charger and charging interface regularly. When cleaning, use a damp cloth, or an antistatic cloth. Do not use dry cloth! Accidentally landed in the process. Do not drop, tap, or vibrate the charger.

7. Anti-cold and anti-heat: do not put the charger in a place where the temperature is too high. High temperatures can shorten the life of electronic devices, damage chargers, and deform or melt some plastic parts. Don't store your charger in a cold place either. When the charger works in a too cold environment, when the internal temperature rises, moisture will be formed in the charger and the circuit board will be destroyed.

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