DELL notebook, today a boot found that power is not power, plug the power supply does not even the computer power adapter is working, the lights are bright, a computer and so on to the off, the computer is not charged, how is it? Is the problem of power or computer problems? Rush!
1. Power connection path short circuit or open circuit.
2. It is recommended to check whether the motherboard interface is short-circuited.
3. Battery and charger connection path short circuit.
It is recommended not to get their own, to the search industry to repair the point. If the warranty period is free!
It is recommended to use a multimeter to measure the output voltage and current of the adapter to see if the input voltage and current of the notebook match, or change the adapter to try to see if the normal power supply, that is your adapter problem, the adapter power supply.
Not over the insurance, then quickly go after the sale of it, suspected computer power adapter problems.
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.
