The power adapter light turns off after connecting the notebook for a few seconds
I think it is the power adapter power shortage caused by this fault phenomenon, mainly for the filter circuit capacitance-based problem. But the power adapter generally can not open the cover repair, for a try it
1: your computer battery aging 2: your adapter and the connection between the computer port problems need to repair
Power adapter power shortage caused by this fault phenomenon, mainly for the filter circuit capacitance-based problem. But the power adapter generally can not open the cover repair, for a try it
1, with a multimeter to check whether the normal socket, the supply voltage is 220V.
If the utility voltage is not normal, it is recommended to replace the use of environmental testing.
2, with a multimeter to check the power adapter output voltage and current is consistent with the label.
If the gap is very large, and the mains voltage is normal, you can determine the power adapter failure,
Need to replace the notebook power adapter.
3, if the above check is normal, remove the laptop battery, do not external adapter.
Press and hold the notebook power button 5 seconds to repeat 3 times. After releasing the notebook residual charge,
Insert the power adapter separately, power on the test.
4, if the fault remains the same, check the notebook's power interface, whether abnormal.
Such as loose or the appearance of damage and so on.
5, the above check are normal, basically can be a preliminary judgment is the notebook motherboard failure. Recommended repair service station.
