Power light flashing erratically and battery charge light blinking on and off
Problem description:
The laptop power light flashing erratically and the battery charge light blinking on and off when AC adapter is plugged into the laptop.
Possible cause:
1. Power jack failure.
2. AC adapter failure.
Possible troubleshooting steps and repair solution:
If it happens only when you move the adapter plug inside the power jack, it’s likely that you have a problem with the power jack inside the laptop. The power jack has to be resoldered or replaced.
If it happens even without touching the adapter plug, the problem could be related to the faulty power adapter.
You can test the power adapter with a voltmeter and find out if the ouputed voltage is correct. If the voltage is not correct, replace the adapter.
But don’t trust that even if the output votage matches specifications. It’s possible that the power adapter doesnt’ work correctly under load. Test your laptop with another known good adapter. If the laptop works fine with another adapter, your power adapter is defective and has to be replaced.
Reader's Comments
Leave a Comment
my laptop is often no power, if there are is on no longer has been hot so the red lamp indicator of batteries light. what can I do ?
Dede,
Sorry I don’t understand the problem description.
i have a gateway laptop computer which is off and can’t even powered on or show battery meter light on. Pls help
at.com,
It’s hard to tell what is going on without looking at the laptop.
First, you should test the AC adapter. It’s possible the adapter is dead and the battery discharged.
Find a voltmeter and test voltage on the AC adapter. If the adapter is bad, replace it with a new one.