Question about Acer Aspire 4520-5141 Notebook

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No power now, due to my plugging USB power into USB jack!

Did I destroy the computer?

Can't tell since battery is dead.

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  • Acer Master
  • 4,806 Answers

Hi,
Here is one way to tell, take out the battery and try to boot it on AC power only.

Good luck

Posted on Jun 15, 2009

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sometimes you just need to remove the battery then power-up the unit using its charger.

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Perhaps the Battery is dead? Try another cord/charger with the EXACT same power specs. Does the computer work? Is it just the Battery? Has the AC jack been damaged due to pulling on the cord while plugged in?

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Laptop battery light won't stay on


The battery might be dead. Batteries only have a useful life and after that they have to be replaced.

Does your laptop work ok off the AC Adapter Power Cord? If so, your battery is dead and your power cord is good. If the laptop does not work off the Power Cord then either your Power Cord is bad or the DC Power Jack where the power cord plugs into the laptop is bad. In either case a good battery will not charge if the power cord or the DC Jack is bad.

Check your DC Power Jack which is where the power cord plugs into the compute. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.

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My battery light is off.


The battery might be dead. Batteries only have a useful life and after that they have to be replaced.

Does your laptop work ok off the AC Adapter Power Cord? If so, your battery is dead and your power cord is good. If the laptop does not work off the Power Cord then either your Power Cord is bad or the DC Power Jack where the power cord plugs into the laptop is bad. In either case a good battery will not charge if the power cord or the DC Jack is bad.

Check your DC Power Jack which is where the power cord plugs into the compute. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.

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The S107 helicopter charged up successfullyfirst time using an Apple USB mains adaptor. I then tried charging it up from a computer USB and it would only partially charge with the machine turned on and the...


Is helicopter off when charging? Will not charge when powered on.
Light on charger should go off when plugged into helicopter.
Also, are you running battery dead? This will destroy a Li/Po battery. Never fully drain battery. Run only until you cannot maintain altitude. Land and power off. Cool for 10 minutes. Charge. Cool for 10 minutes. Skipping either "cool-downs" will also destroy your battery, albeit slower than the full discharge which can sometimes kill a Li/Po battery in only 1 or 2 cycles especially when they are new. Have any friends with a cell phone or laptop (Li/Po batteries also) that they hate because "it's always dying" or "the battery only lasts like 4 hours" whether or not they know why, it is ALWAYS because they rarely charge them fully, especially for the first few charges which are crucial, and the often run the things dead until they won't even turn on.
Back on topic, I use and recommend the usb power adapter. When plugged in using the USB wall adapter, does the charging light still stay on? Certainly if "yes", and still likely if "no" sadly, this to me sounds like a fried battery, which, if it, as I suspect, was caused by frequent or early full discharges and/or hot charging/flying... then you're screwed. The batteries are cheap but quite tricky to replace. Need a steady hand and a needle tipped soldering iron and solder barely thicker than hair.

Hope I've helped,
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My Gateway M-6307 Notebook wont turn on


Ezra, It could be: 1. Dead battery due to faulty Charger. Check the voltage of the charger output. Replace if dead. 2. Dead battery NOT because of charger. You can check it by plugging into the wall socket. Replace if found dead. 3. Faulty power jack on the laptop. Replace it if battery is fine. 4. Faulty power on switch. Needs a replacement. 5. Fault ahead of the switch, then need a professional job.

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1 Answer

Compaq V2000 overheats at power-in plug.


Sounds like the power jack has a short and needs to be replaced.If it melted the ac adapter tip then its a ground problem in the power jack or where it connects to the mother board.

Aug 11, 2009 | Compaq Presario Notebook

1 Answer

Dead short on power jack


Should be battery first, Then AC adapter (Charger)

Dead short on DC Power Jack?
Are you aware of how a DC Power Jack is made, (Component structure), and how it attaches to the motherboard?

If not, allow me to explain. This is an example of an average DC Power Jack,
http://us.st12.yimg.com/us.st.yimg.com/I/yhst-42877593004970_2046_1336946

The outside housing of the DC Power Jack, is barely larger than the outside of the AC adapter (Charger) plug.
It's about a 1/4 inch wide, 3/8 inch inch tall, and 1/2 inch long.
The body is made of plastic.

The outside shell opening in the body is the Negative contact.
The pin in the center is the Positive contact.

Those flat metal prongs, or pins, you see in the photo, go down through the motherboard, are are soldered on the bottom side.
The photo of the jack is upside down, in relation to how the jack sits on the motherboard.

When the 'Charger' plug is plugged into the power jack, it can get bumped. A hard enough bump, or repetitious bumps can damage
the center pin mounting, break the outside metal shell loose, and/or break the plastic housing.

It can also break the solder joint/s for those flat metal pins.

AC adapter unplugged from the laptop, battery removed, see if you can take a pencil eraser, and move that middle pin around. You may see the entire jack move.

There is also a large number of laptops, made with a defective motherboard design. To explain, I'll have to give you a crude example.

Think of the laptop motherboard as being a 1 foot square. (It isn't. It's irregular shaped)
Now along the edge of the 1 foot square, attach a 2 inch square.
It's actually all one piece.

Due to accidental bumping of the 'Charger' plug while in the power jack, this 2 inch 'Peninsula' can break away from the main body of the motherboard. (1 foot square)

There are circuit traces on the motherboard. (Think of a circuit trace, as a Very, Flat, Thin, copper wire)
These circuit trace can become stretched by the cracking, or breaking away of the 2 inch 'Peninsula'. They can then be exposed to circuit traces they're not designed to touch. This can cause a direct short.

(Also, due to the bad design of these motherboards, the laptop user can be just using the 'Charger', in an everyday situation, and this 2 inch 'Peninsula' can break.
Just by plugging in, and unplugging)

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1 Answer

Will not power up


FirewallAvat: Your problem is likely because your battery is dead and the adapter isn't charging it. This may be due to broken connections in the cable from the adapter. Flexing often causes the wire inside to break near the plug. Generic replacement adapters are available, or the wire can be cut back a bit and a suitable replacement soldered on. The cause might also be broken solder connections on the main board at the power jack, This is common from stress due to the power plug flexing. It is usually possible to open the computer and resolder these connections, although sometimes there's too much damage from arcing before the connection fails entirely.

DocBrown: Does the power LED on your computer come on when you connect the adapter? If not, try the adapter in another outlet anyway. Sometimes one outlet in a strip can go bad. Check the output of the adapter with a voltmeter. If it's bad, replace it or try repairing it as noted above. If the adapter is good but the light isn't on, you might have the bad power jack as well.

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2 Answers

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Make sure you have an original OEM charger for the MDA. Many of the knock off chargers don't provide the right amperage for the device. What happens is that since the phone is completely dead, it can't regulate how many amps the battery should get during the charge and an incorrect charge current won't charge the battery. I'm guessing that someone sold you a Motorola RAZR charger or another knockoff made for the RAZR. This might charge your phone when the battery is working, but not when it's DEAD. Also you won't have luck plugging it into a computer USB cable because, again, the phone can't tell the computer what charge to send and most computers only produce <0.5 amps in the USB port.

Get a charger that states it is an OEM (original eqipment manufacturer) device or one that is specifically designed for the MDA (or Cingular 8125). eBay is full of them.

Bad charger (probably won't work for a dead battery)

Good Charger (correct amperage and designated for the MDA)

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