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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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1 Answer

My notebook acer aspire 5251 don't turn on


Take the battery out, plug in the charger and see if the laptop works.

If it works, the battery may be the problem.


Check the AC Adapter
Check to make sure the adapter is plugged securely into the wall outlet, connected firmly to the adapter box and to the back of your laptop.


Most AC adapters have a little light in them on that rectangular box in the middle of the cord that lights up when it's getting electricity.


If that light isn't on, try a different outlet.


Check your fuse or circuit breaker box and plug a different device into that outlet to make sure there is power to it.


If it still does not light up, your adapter could need replacing.


Also check the adapter box for signs of warmth, as it will generate heat when it's plugged in. No heat means no power.

Remove the Battery Sometimes it's as simple as a seated battery.


Remove the battery entirely and clean out any dust, lint or hair that may be clogging the connectors and preventing a proper connection.


Reseat the battery securely and make sure the little locking pins that hold your battery in place are securely fastened and there is no movement.


Check all power and data leads from motherboard to hard drive and all of your cd/dvd drives make sure connections are secure dust free and not faulty


computers need all power and data to travel through every working device and to finish its cycle

so any faulty lead will end in computer error or shutdown / fail to boot or to reboot on a cycle


make sure your computers RAM modules are securely seated with no dust in the sockets also the Cmos battery has charge and seated with no dust in the sockets


some motherboards cmos batteries are soldered in

might be getting hot check you CPU make sure its securely seated and has thermal grease

http://www.hardwaresecrets.com/article/Thermal-Compound-Roundup-February-2012/1490



If you eventually get your computer to start download and install at least one of these all free depending on your operating system.



http://ct.download.com/clicks?t=1141982088-ce770fd4fbc57664a08aea1a8f03b80d-bf&brand=DOWNLOAD&s=5

avg free 2012


http://www.majorgeeks.com/Microsoft_Security_Essentials_for_Windows_d6242.html

microsoft security essentials your operating system must be registered

Win7/Vista/XP 64 bit

http://majorgeeks.com/downloadget.php?id=4281&file=1&evp=dbb3b0aebe6a6a4ff18089a6489a5e62 anti malware free edition Win XP/2003/Vista/Windows7


http://windows.microsoft.com/en-US/windows/products/security-essentials/product-information

malware protection


http://100-downloads.com/download.php?p=615

windows xp microsoft security essentials


http://100-downloads.com/download.php?p=614

windows 7 microsoft security essentials



Hope this helps.

Nov 25, 2012 | ATI Acer Aspire 5251/5551/nv53a...

1 Answer

Samsung n145 will not power up


Related to a Samsung Np-n145 Notebook PC:

Plug the laptop into power for 24 hours. See if the Battery charges up.

Next test, or have tested, the AC adapter (Charger) See if it is putting out 19 Volts -> DC.
Know someone with a multimeter? I can guide you in testing.

AC adapter is good? Things go downhill rapidly here.
The next problem could be a DC Power Jack.

The DC Power jack is the jack on the laptop, that you plug the AC adapter into,

1) The DC Power jack may be broken
2) The solder joints holding it to the motherboard may be cracked. Poor connection to motherboard.

The DC Power jack can be replaced, or it's solder joints re-soldered.

DC Power jack proves to be okay?

Power MOSFET's have gone bad. The next link, is an article that deals with bad Power MOSFET's in an HP laptop. Used for an example,

http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html

Let's hope it's a bad AC adapter

Regards,
joecoolvette

Jul 18, 2012 | Samsung Notebook Np-n145 10.1" Laptop...

2 Answers

Hello! Acer Aspire 7530 problem the motherboard no power on and no light any where.I dont where is the problem chipset or dioda? thank and the good day. Regards, Andrei


Whenyou connect the power adapter into the laptop, does the power LED lightup? If not then - The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty. Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard. This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

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1 Answer

Laptop battery is not charging


Hi, this information represents a basic troubleshooting guideline. Refer to your user guide for specific charging and connection instructions. Manuals may be available online in the Support Web site of HP.

Remove the battery from the computer.
Confirm the battery contacts are free of any foreign material that may prevent charging.
Reinsert the battery into the computer.
Verify that the AC adapter cord is properly connected and plugged directly into a known working AC power outlet.

NOTE: If the battery charges correctly when the AC adapter is plugged directly into an AC power outlet, but not when plugged into a power strip or surge protector, the problem is with the power strip or surge protector and not the computer battery or AC adapter.

Verify the correct AC adapter is being used.
Ensure the AC adapter box power light is on. This will be an illuminated green light.
If the AC adapter power light is not on, the AC adapter and power cord will need to be replaced.
Verify the charging indicator is illuminated on the computer.
If the issue still exists, install a different compatible HP battery, if available.

NOTE: If a replacement battery charges and operates correctly, the problem is with the first battery.

If neither the original nor a replacement battery charges, service may be required for the computer.

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2 Answers

Laptop acer aspire 5740g. No light indication when i connect ac adapter and no response when i press the power button totaly dead.What is the problem


My laptop been droped.
Laptop acer aspire 5740g. No light indication when i connect ac adapter and no response when i press the power button totaly dead.What is the problem

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1 Answer

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Disconnect the battery and power adapter. Press and hold the power button for ten seconds. Reconnect just the power adapter. Turn on computer - see if turns on OK. If it does, reconnect the batteries. There is a possibilty that the power jack that connects the adapter is damaged or open. You'll need to send it to a repair shop to fix the jack.

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1 Answer

I am attempting to bring an acer 5920-6864 back to life for a friend. I found and fixed a broken wire in the positive (red?) side of the power lead that runs from the AC adapter plug in to the...


Is the powerpack light on?
Does it stay on when your plug it into the moterboard?
Is the light on to indicate that the computer is plugged into the charger?
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Oct 06, 2010 | Motherboards

3 Answers

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this could be due to the fault in the ac adapter,please try swapping another adapter if it works then you need to replace your adapter.

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1 Answer

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1 Answer

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This may not solve your problem, but it does sound like your power supply may be the culprit. Find a paperclip. (Yes a paperclip. I'm not kidding.) pull the large 24 pin power connecter off of the motherboard (there will be a little plastic latch you need to press to get it off) and any other plugs coming from the power-supply should also be disconnected. Next streighten out the paper-clip and then bend it into a 'u' shape. With the power supply unplugged from everything but the cable going to the wall stick one end of the paperclip into the hole where the green wire connects and the other end into any hole where any one of the black wires connect on the 24 pin power adapter. If the power light turns on and you see the fan going the Power supply may yet be good. However, if the light doesn't come on and the fan in the power supply doesn't spin chances are your power supply is dead and you will need a new one. Be sure to remove it from the case and bring it to a local shop as some HP's use non-standard form factor Power Supply Units. The parts shop will be able to match up your Power Supply with something of the same form factor and similar or better wattage.

If it's not the power supply please post your results and we can diag from there.

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