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How to detect laptop power adapter failure

Step 1:First of all, you can gently shake the power connector or battery to see if the power adapter or laptop battery is in good contact, if not, try to reinstall the power adapter
If not, try to reinstall the power adapter or battery. Possible failure conditions are deformation of the power connector or degradation of the battery contact singularity.
Step 2: If the power supply or battery connector is good, use a multimeter to measure the output voltage of the power adapter or battery, mainly to see whether the output voltage is stable, as well as the actual output voltage value and the power supply whether the nominal voltage match, if the output is not stable or the actual output voltage and the nominal difference between the product, you need to replace the damaged power adapter or battery.
Step 3: If the above detection steps are shown to be normal, it can be inferred that the fault in the notebook power supply board or motherboard, here you need to open the laptop shell, and check whether the power supply board and the motherboard contact is good.
Step 4: If the power supply board and battery are in good contact, the DIY commonly used replacement method to check whether the power supply board is normal, such as not normal, replacement can be. Step 5: If the above methods to confirm the power supply board, battery are normal, it can be inferred that the notebook motherboard or other main components are damaged (such as boot circuit failure), this time you can repair or replace the motherboard.

Power adapter is bad how to do?
1, check the power adapter indicator light, if the indicator light is on, it is generally believed that there is no problem from the power supply to the adapter, must ensure that the indicator itself is not bad.
2, check the power adapter to the computer between there is no electricity. This can be shown by the laptop's indicator light, there is power charging to the laptop, that charging indicator light will be on. Otherwise, it will not light. Or find a power adapter of the same brand exchange try. With your power adapter hand the other laptop, if the other computer works normally, then your power adapter is not a problem. Otherwise, your power adapter may have problems. If the other party's power live adapter plugged into your computer, your computer works normally, and with their own power adapter does not work properly, then your power adapter has a problem.
3, observe the computer's indicator light changes. If you plug in the power adapter, you can see the charging indicator light on and off, there is a time has not been extinguished, it is the notebook inside the power adapter interface has a problem, generally may be inside the line is broken, circuit board aging, coal joints fall off and other reasons. This is called the phenomenon of soldering. This situation only call the expert repair.

If you want to know more about switching power supply information, you can consult Xiamen Eahunt Electronics.

Whatsapp:+86 13860786068

Email: athene-cai@eahunt.com

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