Laptop power adapter (no power supply, but indicator light)
There may be reasons for the power adapter, there may be a computer can not identify the power supply is battery-powered or AC power. These are just speculated by your phenomenon, if you are better in the warranty period to the customer service test, so the best
With a multimeter to measure the power adapter output interface voltage, no voltage is the adapter problem; a voltage is a notebook problem, and then decide how to do it.
The adapter interface is less likely to be bad, but it does not exclude motherboard interface or power control chip problems. The former 50 yuan can get, the latter need a few hundred dollars.
Notebook power adapter can not charge, but the indicator light does not light the common reasons are:
1, the power adapter is broken or the connector is broken.
2, the power adapter output problem, no output or output is too low, can not give the computer charge.
3, the notebook charging interface is broken, not into the electricity charge.
4, the notebook power management circuit out of the fault, resulting in can not charge.
