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Acer 5920-6474 does not power on

When I plug my adapter (wall to adapter plug) green light on adapter is ON. When i connect the adapter wire to the laptop...the adapter light is FLASHING.. and NO POWER sign in the laptop...

no power at all in the laptop. Called ACER Tech and he said my ac adapter is broken or not working.

If anyone has / had same problem let me know...changing adapter solved or not.

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  • brdprince Jan 08, 2009

    OK, i tried to power up with fully charged battery (charged battery on other acer laptop-as mine is dead) still NO power. I was running all time on AC adapter and NOT on battery so i guess the computer is set on the POWER MANAGEMENT SETTINGS of AC Adapter NOT battery so it wont start on battery (some one told me above-dont know if correct).

    ACER Tech says mother board mostly is gone..needs replacement. or ac power jack connection with the mother board. He doesnt know why its not starting with the fully charged battery. Other acer tech send me new ac adapter -tried- same-NO POWER

    Can anyone tell what might be the solution and approx cost..

    thanks


  • fidders Mar 31, 2009

    i have acer 5920 same exact problem will not power on .green light flicker when plugged into back of laptopunplug it light glows steady Please help i dead in the water

  • Anonymous May 06, 2009

    I am facing the same problem with same laptop.



    I would suggest if anyone can suggest the resolution on the same.

  • Anonymous May 25, 2009

    Same problem,my lappy pooched today with the exact same symptom.

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The problem lies with failed smd capacitors grounding out underneath the motherboard on the same side of the board as the cpu heatsink. if you look at the board with the heatsink/fan in the top right hand corner- the culprit caps are in the bottom right hand region under some see through plastic. they are labeled pc144 and pc145.

Posted on Jul 28, 2009

  • vermeulec Jan 11, 2011

    Those particular caps you are talking about look like they are associated with the IR comms. Nothing to do with the power supply circuit at all.

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I have the sam problem except I could smell electronics burnout which I discovered to be PR8 (I think is a 20 Ohm resister located close to where the 19V adaptor plugs onto the motherboard). There are a few fets and diodes and regs in this regin. If any of these are shorted then you will get thissort of prob as well. I will check out these caps though!!
Any one know the value of PR8 for sure??

Posted on Dec 26, 2010

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  • vermeulec Jan 11, 2011

    I have now located 2 faulty fets and what seems to be a regulator. I have ordered new parts and will try and fix my computer over the next week or so.

  • Meecowhy Feb 02, 2011

    try herehttp://www.google.com/url?sa=t

  • vermeulec Feb 04, 2011

    I ended up buying a second hand motherboard from a computer repairman and fitted it. It fixed my problem.
    When I get a chance I will be fitting the new fets into the old motherboard to see if I can get it up and running.
    It is difficult becuase they now use lead free solder which requires a bit more heat then the lead solder. Special tools are needed to get the heatinto the borad ad te components for rempval and replacement. Luckily I have a friend with the right equipment.
    I will post again if I get the old motherboard working.

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Does your laptop power up on battery power? Have you removed all external devices (external monitor, keyboard, mouse, any USB device or expansion card, etc.)? Can you remove the CD/DVD drive? Do you feel comfortable removing the hard drive?

First remove everything you possibly can and see if the power adapter works. If it does, try adding and testing the items one by one to see which is causing the problem.

If the laptop will power up with battery and not with A/C adapter, it is very likely the adapter is the source of the problem.

Honest1abe

Posted on Jan 06, 2009

  • honest1abe
    honest1abe Jan 09, 2009

    From what you told me, Acer tech is most likely correct. Laptop motherboards are not cheap and replacing them is best done by a professional.

    There are a couple of options you might find attractive. Look on E-bay or Craig's list for someone selling the same make and model with a display problem. In other words, they have a dead or damaged LCD but the rest of the computer works well when attached to an external monitor. If you are lucky enough to find one at a very reasonable cost, you might be able to attach your LCD screen to the other laptop for a working computer. You could even swap out the hard drive with yours and everything should work getting you back to full functionality.

    Another option is to go online or shop locally for a laptop repair shop. Get the rates up front and look for places that offer free diagnostics. They may be able to solder the joint on the A/C connector or even have a used motherboard replacement at a decent price.

    A third option would be to put your laptop on E-bay or Craig's list and sell it as is and use the money with some of your own to buy a new laptop.

    Honest1abe


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