Question about ASUS A8Jp Notebook

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ASUS A8JP Will Not Power On

My ASUS A8JP went dark while I was using it with the battery pack installed and the power supply plugged in.

The power supply and battery pack have both tested ok.

As soon as I plug the power supply into the computer the bright green light dims and starts flashing on and off and the computer remains "dead."

The two year warranty expired two months ago.

The tag on the bottom reads:

Model: A8J
MB Ver: A8JP

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  • Cadlin Scott May 29, 2009

    The charger tests fine for DC Volts and Amps both initially and under load. The battery tests as fully charged.

    When the charger is connected to an AC source, the green LED shines steady and bright. When it is then connected to the notebook (both with and without the battery installed), the LED dims and slowly blinks.

    The Notebook will not power on no matter if the power suplly and battery are both present, or the power supply alone, or the battery alone.

    I'm pretty much satisfied that something on the Main Board is gone. That's a $200.00 part from ASUS.

  • Cadlin Scott May 29, 2009

    Thank you, but that's not it. I wish it were.

    As originally stated, the Notebook went dark (shut down all at once) when the Power Supply was attached and with the battery installed.

    The Power Supply is producing 19VDC and 4.74 Amps. Through a 6VDC resistor, it produces a steady 13VDC.

    The battery produces 11.1VDC across its terminals.

    There is continuity through the DC power port on the Main Board to the battery terminals on the Main Board, and through the power switch on the main board.

    Once again, thank you.

  • Cadlin Scott May 30, 2009


    One of the three-fingered clips that stablize the door over the fan/heatsink/cpu/video card compartment had come loose and was lodged between the I/O shield and the main board under the the power switch.

    Everything's working now.

    Thank you.

  • ksjon May 11, 2010

    are you 100% positive that the charger is ok? i mean, have you tried it on another computer (without battery when testing)?

    and you say that the light dims when you insert the charger. does the led always light up green when ac- is not connected? have you tried to take out the battery and reinsert it?

    tried to boot the computer only on ac-without battery?


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"When the charger is connected to an AC source, the green LED shines steady and bright."

are you talking about the led on the AC-adaptor? cause if its that led that dims down, its a defective ac-adapter (even tho you still might not believe me). replace it and try again.

how would you know that the battery is fully charged?

please rate my solution after you have tested if it works out for you :)

Posted on May 29, 2009

  • ksjon May 29, 2009

    you still havent tried a different ac-adapter. you should, since its a rather easy thing to try.

    ... and as said. i promise you its the charger.

    i have measured several adapters seemingly outputting enough voltage. the fact is that it doesnt handle to produce enough watts.

    "As originally stated, the Notebook went dark (shut down all at once)
    when the Power Supply was attached and with the battery installed."
    the charger was defective, and the battery was out.

    hehe. i wont give you up before you try another charger. head over to the closest and ask to try another charger in your computer :) when you say you have tried, then we can settle.

  • ksjon May 29, 2009

    i just noticed you wrote:

    "The Power Supply is producing 19VDC and 4.74 Amps. Through a 6VDC resistor, it produces a steady 13VDC"

    does the voltage drop when you connect a resistor? how many Ohm was the resistor? simply adding a resistor shouldnt lower the Voltage.
    tbh, it seems to me you proved that the charger fails when you put load to it (dropping from 19v to 13v)

    i might be totally off, but i'm actually educated as an low current electrician (tho toooo many years ago ;) )


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