1. If there is a problem with the original adapter and it is impossible or too late to repair, you can temporarily replace it with another power adapter with the same output voltage and power. Before maintenance, you must first prepare tools, including a multimeter, screwdriver, and welding tools.

 

2. There are four plastic caps on the power adapter that can be unscrewed to avoid damaging the power shell as much as possible. If the shell is damaged, electromagnetic radiation may be strengthened and other problems may occur, which will affect the stability of the machine. If the shell has been damaged, try to repair it or replace it directly. After opening the shell and shielding layer, it is best to check the solder feet with naked eyes. The circuit is intermittent, usually due to poor contact. Use a multimeter to check whether there is a problem with the power cord to simplify maintenance.

 

3. During the test, if the resistance pin is found to be welded, please use a welding tool to repair the welding, then install the power adapter, start the test, the test is no problem, it has been repaired. It is worth noting that if you encounter a problem with a certain capacitor during the test, since the IC chip is one of the most important electronic components in the power adapter, the capacitor is too complicated, and you can purchase a capacitor of the same model and capacity to replace it. Solder the problematic component first, and then solder the new capacitive component.

 

4. Since the power adapters on the market have adopted a large number of SMD components, once the components have problems, the maintenance is more difficult. The power of the power adapter, improper PCB layout, and poor component quality may increase the probability of power failure. Therefore, choosing a good quality power adapter is very helpful to the stability of the notebook.

 

5. Check the capacitor, resistance and inductance for any problems. If the capacitor is bulging, it is best to replace it in time to avoid potential safety hazards.

 

The above are the five steps of the power adapter. Based on this, we can better check the quality of the power adapter. In addition, if there is no big problem, do not open the shell easily. If necessary, it is recommended to consult a professional or the operation is more appropriate.