When the notebook is not connected to the computer, the indicator light on the adapter is on
But a computer on the off, but also to no power
Is this the problem with the adapter or the computer?
5, the above check are normal, basically can be a preliminary judgment is the notebook motherboard failure. Recommended repair service station.
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.
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.
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.
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.
