The power adapter is a very common and relatively important device in our life, and its application range is also very wide. For example, the charging power supply of a notebook is a power adapter. Since it is an electronic device, it will inevitably cause internal damage over time. If there is a problem with the power adapter, what does it look like when it is broken? What should I do if it is broken? These two issues will be analyzed below.
The power adapter is broken
1. The current at the output end of the 12V power adapter is on and off, or the output end is bulging and bursting by an electrolytic capacitor at the indicator light (after power-on for a while);
2. The indicator light of the 12V power adapter is not on or the indicator of the computer is not on when it is connected to the computer, and the computer cannot be turned on when it is connected to the computer, indicating that there is a problem with the adapter;
3. It cannot be used normally, and it cannot be charged and turned on normally;
4. There is no response when plugged into the computer;
5. After the power is turned on, the calorific value increases and the temperature is abnormal;
6. Use other people's adapters with your laptop to see if similar problems will occur: try using your adapter with someone else's battery of the same type; try putting your adapter on someone else's computer; put your battery Try it on someone else's computer of the same model.
What should I do if the power adapter is broken?
1. Check the indicator light of the power adapter. If the indicator light is on, it is generally believed that there is no problem between the power supply and the adapter. It must be ensured that the indicator light itself is not damaged.
2. Check whether there is electricity between the power adapter and the computer. This can be displayed by the indicator light of the notebook. When there is a power supply to the notebook, the charging indicator light will be on. Otherwise, it will not light up. Or find a power adapter of the same brand and try it. Use your power adapter to hand the other party's laptop, if the other party's computer works normally, your power adapter is fine. Otherwise, there may be a problem with your power adapter. If the other party's power adapter is plugged into your computer, your computer works normally, but your own power adapter does not work properly, then there is a problem with your power adapter.
3. Observe the change of the indicator light of the computer. If after you plug in the power adapter, you can see that the charging indicator light is on and off, and it does not go off for a while, then there is a problem with the power adapter interface in the notebook. Generally, the line inside may be broken, the circuit board is aging, and the welding fall, etc. This is called the virtual welding phenomenon. In this case, the only way to fix it is to call an expert.
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