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Adapter plug,for battery which is on the back is loose how do i fix it

The plug where i put the dc adapter is loose and if I don't hold it right I lose power on my laptop and it shuts off, is there a way to fix this or ?

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Re: adapter plug,for battery which is on the back is...

Yes, but its not a cheap fix depending on the laptop. The best route is either call manufacture or go to a local repair shop and see if they have parts for that type of laptop. Its really only a 10 minute job of swapping the part out. The part though has various prices so don't be surprised if someone charges you 50-60 bucks for a little piece of plastic.

Posted on Jul 19, 2007

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Re: adapter plug,for battery which is on the back is...

Do you mean the socket on the laptop where the plug from the adaptor plugs into? If that is damaged it can be replaced by a repair shop and sometimes by a skilled user. The repair typically involves a fairly in depth disassembly of the laptop so the user would need to have fairly decent mechanical aptitude, a good assortment of small screwdrivers and experience handling electronics. If the laptop is still in warranty I would strongly recommend sending it to the manufacturer for repair. It may not be a warranty repair; however, if anyone else takes it apart you will void your warranty on anything else that may go wrong in the future.

Posted on Jul 19, 2007

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Power problems

Unplug the AC adapter (Charger) from power. Unplug the AC adapter from the laptop.
Remove the Battery.

Press the Power On button in, and hold it in for a count of 10 seconds.
(And I mean 10. Count, 1001,..1002,..1003,..etc)

Reinstall the Battery. Plug the AC adapter back in. Plug the AC adapter into power.

(ALWAYS plug the AC adapter into the laptop FIRST, then plug the AC adapter into power.
To avoid a voltage spike at the laptop)

WAIT 1 minute, turn the laptop on.

Still no?

Then the AC adapter needs to be checked, to see if it is putting out the correct voltage.

Don't know, Model Number wasn't stated.

AC adapter checks out, then it is on to the DC Power Jack.
The jack on the laptop (DC_IN) that the AC adapter plugs into.
What style?

Don't know the Model Number wasn't stated.

DC Power Jack checks out, then I suggest you have a problem with a Power MOSFET,

(Model Number is on the Bottom of the laptop. Plus, this IS a Dell, right?)

Post back in a Comment.


Feb 19, 2013 | Dell Inspiron PC Laptops

2 Answers

The adapter light is on when first plugged in but then when I connect the adapter to my laptop the light goes off and it doesnt supply any power

I suggest check out the AC adapter first.

1) When plugged into power, and plugged into the laptop, gently wiggle the cable from the AC adapter TO laptop.

Any change?

Do the same on the power cord TO AC adapter.

Go on.

2) The port on the laptop that the plug from the AC adapter plugs into, is the DC Power Jack.
If we are discussing an Acer Aspire 5738Z Notebook PC, the DC Power Jack resembles this one, (Not installed),

(When I note the DC Power Jack, it is this link I will be referring to )

As you can see there is a Center Pin. All power removed from the laptop, use a small wooden, or plastic object, and see if this pin moves around.

ANY perceptible movement means a bad DC Power Jack.

DC Power Jack checks out it's back to the AC adapter.
Wanted to perform the easy diagnosis first.

This will require a multimeter. An economical, yet fine for this test multimeter, can be purchased for as little as $8 to $12.

Available in a multitude of stores. An auto parts store is but one example.
Analog or digital is fine.

(Analog is fine. Some of us still like 'em)

DC Voltage is what you are going to check.

Black probe lead (Negative) goes in the Common port on the multimeter. (COM)
Red probe lead (Positive) goes in the Voltage port on the multimeter. (V)

If the multimeter just has symbols around the Function Knob, set it to the dotted line over a solid line, symbol.

The plug on the end of the AC adapter, that plugs into the laptop, has a center hole, and a cylindrical metal shield surrounding it.

The Center Hole of the plug is where the red Positive lead, of the multimeter goes.

The outside cylindrical metal shell is where the black Negative lead of the multimeter goes.

Hold the AC adapter plug in one hand, and at the same time hold the red Positive multimeter probe in the center hole.

With the other hand touch the black Negative lead of the multimeter, to the cylindrical metal shield on the outside of the plug.

You should read 19 Volts (DC), or VERY close to it,

I believe the AC adapter is the problem. Post back in a Comment as to your findings.


Apr 29, 2012 | Acer Aspire 5738Z-423G32Mn Notebook

1 Answer

Loose power adapter

Loose Power Adapter or loose internal dc power jack where the adapter plugs into the computer? If the Power Adapter is loose buy another one. If the internal DC Power Jack is loose, you will have to take the laptop apart to repair it. The DC Power Jack is on the motherboard and most times it is soldered to the motherboard. That means you will have to desolder the old one and solder a new one in it's place. Sometimes the dc power jack sits in a slot between the bottom case and palmrest which hold it in place and has a cable harness that plugs into the motherboard.

Mar 29, 2012 | PC Laptops

1 Answer

I have an ASUS eee netbook. Recently the power cord hasn't been connecting well to the computer and now it doesn't even register. It's plugged in but isn't charging. Is it the cord or the laptop?

You have a bad DC connector, which came loose from the system board:

Problem symptoms:

  1. Laptop randomly shuts down without any warning.
  2. Power LED and battery charge LED start flickering when you wiggle the power cord or the AC adapter tip on the back or your laptop.
  3. The battery will not get charged.
  4. When you plug AC adapter, the laptop appears to be dead and there is no LED activity at all (DC-IN jack on the system board is broken).

Here is a tutorial on how to fix a DC connector problem. You may want to have a tech fix it.

Nov 30, 2010 | ASUS PC Laptops

1 Answer

The ac power plug was broken loose on my sony vaio vgn fw140e and finally the laptop failed to power up. I'm pretty sure the power adapter came loose from the mother board . I just don't know how to fix...

1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable.
2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced.
3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.)
4. Next, remove the keyboard & the LCD screen.
5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard.
6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them.
7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack.
8. When you are done, re-assemble back the laptop.

Sep 09, 2010 | Sony VAIO VGN-FW140E/W Laptop

1 Answer

Dell inspirion 1501 laptop, not charging battery light showing red, have bought a new mains adaptor but still not charging

Does the back dc jack seem loose when you have the ac adapter plugged into it? Wiggle the cord right where it plugs into the laptop. If it moves around then most likely the dc jack on the inside has one of it's 3 points of contact broken. This means that someone would need to re-solder that contact or put a whole new jack into the laptop. Another thing to try is replacing the battery. Sometimes they won't charge because they are bad. Another thing to try is take the battery out, plug it into the adapter, turn it on, get into windows, shut down, put battery back in, turn on. See if that resets the battery and makes it charge.

Apr 30, 2010 | Dell PC Laptops

2 Answers

My laptop lenovo 3000 N100 battery has a problem.. therefore i purchased a new battery but the problem with this battery is that when i use the battery it runs the laptop for 10 -15 mins and then with a...

My Dell laptop has a power problem.
The Dell Precision M20 Battery stops charging when I move the power cord on the DC adapter. When I start moving the cord left to right, the power LED light on the front goes on and off and the battery charge LED goes on and off too.
I removed the precision m20 battery and tested the laptop again. The laptop starts fine from the DC adapter when the battery is removed, but as soon as I start moving the power cord the laptop shuts off. It looks like the laptop looses power immediately.
If you have a problem like that, most likely it’s related either to the power adapter or the DC-IN power jack.
First of all, I tested the laptop power ac adapter with a multimeter. The power didn’t cut off no matter how badly I moved the cord. The power adapter output voltage was 15.45VDC all the time. That means there is nothing wrong with the power adapter and most likely there is a problem with with the power socket inside the laptop.
Now I’m going to test the power socket inside the laptop.
In order to access the power socket I had to disassemble the laptop and remove the top cover assembly with the display.
You can find disassembly instructions for many HP, Dell, IBM, Lenovo, Sony and Toshiba laptops in these service manuals and guides.
In the laptop I was fixing (Tecra M2) the power jack is attached to a DC-IN harness and this harness can be unplugged from the motherboard.
As you see, I removed the DC-IN harness from the motherboard, plugged in the power adapter and tested continuity with my multimeter as it shown on the picture.
When the power cord is still, the voltage output is 15.45VDC, the same as on the plug.
But as soon as I start wiggling the plug inside the jack, the power cuts off and voltage goes to 0. It means, the power harness is bad.
The problem was fixed after I replaced the defective DC-IN harness with a new one.
In some laptops the power socket (DC jack) is soldered to the motherboard.
If the battery stops charging when you wiggle the power plug inside the jack, either you have a bad power adapter (test it with a voltmeter) or the power jack is broken or loose.
You cannot simply unplug the jack and replace it with another one. You’ll have to unsolder the old jack and solder a new one back on the motherboard as I described in this post.
If the power jack is not broken but loose (not making good contact with the motherboard) you can resolder the old jack without replacing it with a new one.
If you want to buy a new one,you can see more information from

Feb 18, 2010 | Lenovo 3000 N100 Notebook

2 Answers

HP home edition ze2308wm keeps seitching from AC to battery

The soldier holding the DC jack on the machine has broken loose. If you can, you should take it back to the place you had fix the jack and have them resoldier it. These are very small connection points, and if they don't get the soldier in there good, will break loose. It's a common occurrence, I've had it happen to a few of my soldier jobs, they should take care of it. Be careful with the way it is now, you can do severe damage if the connection point gaps and creates an electrical arch. I would suggest not using it until you get it fixed.

Jul 15, 2008 | HP Pavilion ze2000 Notebook

1 Answer

Compaq Presario 1200 won't charge battery

dear N9YK

you can follow this

If you have a loose connection where you plug in the power on your laptop, or it works intermittently, you could have a bad dc jack. Symptoms
  • Move the power plug and the laptop loses connection
  • Broken or cracked dc jack
  • Laptop won't charge but worked on battery
  • Power LED and battery LED flicker when the adapter tip is moved
  • Battery won't charge
  • Sparks come out the back of the laptop
Why does this happen?
  • Flaw in manufacturer designs
  • Use of universal or non-original ac adapter
  • Lots of plugging and unplugging of the ac adapter
  • Tripping on or pulling the ac adapter cord
or you can check your dc amper in your adaptor




Mar 16, 2008 | Compaq Presario 1200 Notebook

3 Answers

No power

Try to remove the battery and then plug the power adapter only. If does not power up try with battery only and then if not your motherboard is bad. You can send it to us and we will fix it

Sep 10, 2007 | Dell Latitude C640 Notebook

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