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Broken DC jack Acer Aspire 3100 series, 3102 laptop

The dc jack shattered on my laptop. It is currently in a computer repair shop, but he and I have exhausted all avenues to find this jack. No one online seems to have it. One place shipped us one with a part # of AC 91316, but it wasn't the correct one. May have to replace the motherboard, but haven't been able to locate one of those either. I purchased this laptop new just a little over a year ago. Acer has been no help since it is out of the warranty and we mistakenly thought we had purchased an extended warranty.

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Re: Broken DC jack Acer Aspire 3100 series, 3102 laptop - Motherboards

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Posted on Dec 10, 2007

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I want diagram of acer extensa 2300 for trouble shooting

No power in it?

Meaning you are reading with a multimeter set to DC Voltage, and power IS at the DC Power Jack? (DC_IN)

You, of course, have checked the Voltage coming out of the AC adapter, (Charger), and have verified it is putting out the correct voltage?

19 Volts DC.

Then suggest you have a bad Power MOSFET, or two.
Using the HP Pavilion dv6000 series, and Pavilion dv9000 series of Notebook PC's, for an example,

As you can see the Power MOSFET's in question, will be close to where the DC Power Jack is attached to the motherboard.


Mar 13, 2013 | Intel Motherboards

1 Answer

Screen doesn't come on power indicator light on when plugged in, any suggestions?

1) Unplug AC adapter (Charger) from surge protector strip. Unplug AC adapter from laptop. Plug AC adapter back into power, then plug back into laptop.


Then the AC adapter needs to be checked.

The AC adapter converts high 100 to 240 Volts AC, from your home or business; into 19 Volts DC. (19VDC)

Looking at the AC adapter example above, the plug end that plugs into the laptop; has two connections;

1) The Center Hole is the Positive connection.
2) The outside cylindrical metal shell is the Negative connection.

Using a multimeter to check;
Set the Function knob to DC Voltage. If just a symbol, the symbol is a dotted line over a solid line.
If there is more than one DC Voltage scale, set the Function knob to the 0-50 Volt DC scale. (0 to 50 Volt)

The Positive (Red) probe lead goes to the Center Hole.
The Negative (Black) probe lead goes to the cylindrical metal shell.
You should be reading 19 Volts (DC)

Have an assistant gently wiggle the cable FROM AC adapter TO laptop.
Also have the assistant gently wiggle the power cable FROM surge protector TO AC adapter.
Fluctuation in reading on multimeter; indicates a broken wire, in one of those cables.

Replace AC adapter if so.
Not 19 Volt reading? Replace AC adapter.

[An economical multimeter can be purchased, for as little as $5 to $12. An auto parts store is but one place to puchase one. I have seen them on checkout aisle racks, in major discount stores.

I can guide you step by step with it, if you post the manufacturer name, and model number of the multimeter.
Skittish about measuring the voltage? Worried about shock?
I understand. However, I wish you to know that two D cell flashlight batteries, store 3 Volts DC. You will be measuring for 19 Volts DC.

Or take the AC adapter to the nearest small computer shop. The resident tech should only charge a couple of bucks, to test it for you]

AC adapter checks out?
Then the diagnosis goes on.
(Or you may wish to skip to the next step, and perform it first)

DC Power Jack:
The DC Power Jack is the jack on the laptop, that the AC adapter plugs into.

Looking at the photo of the motherboard, you are looking at a Bottom view. The Processor, and Ram Memory are on the Bottom of the motherboard.

There are two silvery looking ports, on the BOTTOM/Left corner.
The one all the way to the Left, is the Ethernet port.
Next to it on the right; is the DC Power Jack.

Another look at the jack not installed;

Great! Can't find an exact listing for an Everex NM3500w DC Power Jack.
However the above example mounts the same. The connecting prongs (pins) on bottom, may be in a different pattern, though.

Click on the photo to enlarge.
This shows a bottom view of the jack. The rounded tipped prongs go through holes in the motherboard, and are soldered on the opposite side.

The prong all the way in the back of the jack, left side; goes to the Center Pin. The Center Pin is the Positive connection.
The prong coming up from it in the middle, is for the Negative connection. It goes to the contact/s surrounding the inner hole, in the jack. (Inner hole around the Center Pin)

Battery removed, AC adapter removed; see if you can gently move the Center Pin, using an eraser on the end of a No.2 pencil.

ANY perceptible movement means the DC Power Jack needs to be replaced.
If it seems the entire jack itself moves, problem may just be a cracked solder joint, or joints. Or may be a bad power jack.

A cracked solder joint will make an intermittent contact, or No contact at all; of DC Power Jack TO motherboard.
Battery will not receive power, laptop will not turn on.

Power On LED indicator is on? Means nothing really. Uses way less than 1 Watt of power to light that LED. (Light Emitting Diode)
A cracked solder joint could allow that much power, but not enough to turn the Processor on.

DC Power Jack seems fine, from this simple cursory test?
You really have to disassemble the laptop, remove the motherboard, and check; to be sure.

See if by gently wiggling the Body of the DC Power Jack, if there is any perceptible movement.
Use a bright light, and magnifying glass; to carefully scrutinize for a cracked solder joint.

AC adapter checks out? DC Power Jack checks out? Next in line are the Power MOSFET's.
Now we are talking board level component replacement; (SMD's), Or motherboard replacement.

Using the HP Pavilion dv6000 series, and Pavilion dv9000 series of Notebook PC's; for info about Power MOSFET's in the charging/power section, of the laptop's motherboard. (DC to DC Circuit),

Cost exceeds repairing laptop feasibly, and you need to retain the information on the Harddrive?
Suggest removing harddrive, and installing in an economical external enclosure.

The harddrive resides in a Harddrive Caddy. A sheet metal enclosure. Then both are installed in the laptop. The sheet metal Harddrive Caddy is removed, so the Harddrive can be installed in the external enclosure.

Don't know what technology the Harddrive uses.
Do not know if it is an IDE (PATA) unit, or a SATA unit.
DO KNOW that it is a laptop harddrive, and will be 2.5 inches across in Width.

(2 and 1/2 Inches)

Once the Harddrive is removed, you can look the model number up on the internet, and see if it is an IDE, or SATA unit.

[IDE is referred to as PATA also. Parallel ATA.
SATA is Serial ATA, ]

You can also post back here with the Harddrive's model number, and I can find the information out for you.

IDE (PATA) example;

(Scroll down)

SATA example,

Scroll down)

Reviews I found on the 'net were few, and lacking. One's for sale on places like Ebay, give sketchy information on what the laptop even looks like.
However I believe I can guide in disassembling, if you wish.

For additional questions please post in a Comment.

Jan 06, 2013 | Everex Stepnote Nm3500w 15.4" Laptop Intel...

1 Answer

My DC jack broke what should i do.

I am assuming you mean the DC jack on the motherboard in your laptop?
You can repair it yourself, or take it to a repair shop and pay to have someone do it.
To repair it yourself, you'll need:
1) A new DC jack (though sometimes you can fix the broken one)
2) The disassembly guide to your specific model of laptop. Google the phrase "laptop make/model disassembly" and one should come up pretty quickly. Guides are generally step-by-step with pictures included, and putting it back together is just the reverse of disassembly.
3) A soldering iron and solder. 15-30 watts for delicated boards like a motherboard. Once you've pulled your motherboard out, You can de-solder the broken DC jack from the motherboard (if necessary) and solder the new one on. DC jacks are generally 2-4 solder points and fairly simple to press back on.

May 26, 2011 | Motherboards

1 Answer

Hello sir, The problem with my laptop compaq presario v6500 is that it works on battery but it does not work on AC power while my charger is alright. neither its battery is getting charged. i took to a...

hi karun, i think your hardware eng may lie to you,its not necessary to change hole motherboard for this problem , if you have problem in your motherboard mean you cannot ON your laptop itself , just try to take your laptop to some-other hardware expert to do this process, or may be he didn't get spare of DC jack for your laptop.

But i am sure if you change your DC jack is more enauf for this problem, i have search how to do DC jack process in online, i got one site too. just check it and try to show it to your Hardware eng.If possible ask about you can able to get DC jack spare in your area , some hardware eng can help you by putting DC jack of old laptop of same model. Just don't change your motherboard until you have try all this process.

just copy and paste the link in your browser :

Good luck ! if you think your problem solved don't forget to rate

Jan 01, 2011 | Compaq 449901-001 - HP Presario V6500...

1 Answer

How do I replace the DC power Jack socket on my ACER Extensa 5620 .Mosel NO MS2205

Here is a place to buy a dc jack for the motherboard:

This video will show you how to replace dc jacks in a laptop:

This page has the service manual for your laptop:

Sep 22, 2010 | Motherboards

1 Answer

Toshiba plug-in ac adapter LCDlight flashing and wont boot up

It may be that you need a new, (Or good condition used), motherboard. You may not.

The problem could be the DC Power Jack. The DC Power Jack is small, and the body is made of plastic. Sometimes there is a metal shell around the plastic body. (The jack is a rectangular shape, and is just a little larger, than the outside portion of that AC adapter plug!)

This is an example of a DC Power jack for a Toshiba Satellite a215-s5807,

As you know there is a metal pin in the center, and at the back of the round hole, there are flat metal contacts.

Let me explain the construction of a DC Power Jack, and how it's mounted to a motherboard. This all has relevance to the solution.

Your laptop uses DC electricity. (The AC adapter converts AC to DC. Your laptop battery, and a flashlight battery, are examples of stored DC electricity)

DC uses a Positive connection, and a Negative connection. The metal pin in the center is Positive. The flat metal strips at the back are Negative.

That laptop DC Power Jack has metal prongs, that come out of the plastic body. One prong, (Or pin), connects to the Positive metal round pin, in the center of the jack.
There may be one, or two prongs, (Or pins), that come out of the plastic body, and connect to the Negative side of the jack. (Flat metal strips)
These prongs go down through holes in the motherboard, and are soldered on.

With the AC adapter plugged in, an accidental bump on the plug itself, could break the body of the jack, or break solder joints that hold the jack to the motherboard.

AC adapter removed, and battery removed. Use a NON-metallic object, and see if you can make the center pin of the jack move. See if the entire jack itself seems to move.
A.If the center pin moves, you have a broken DC Power Jack.
B.If the entire jack moves, you have cracked solder joints. (Broken)

Replacement of the DC Power Jack for A.
Re-solder the solder joint/s for B.

Cost of replacing a jack at a reputable computer repair shop? $90 to $150
Cost of re-soldering solder joints? $50 to $90
Cost of replacing the motherboard?
$250 on up.

If you are a skilled person with the correct tools, it is feasible for you to replace the jack, or re-solder the solder joints.
It is also feasible that you yourself, could replace the motherboard.

Some laptops have a poor motherboard design, for where the DC Power Jack is mounted to the motherboard.

Crude explanation would be, that the main body of the motherboard is a 1 foot square. Then a 2 inch square comes out of the side of the main body.
The DC Power Jack is mounted to that 2 inch square. From accidental bumping, OR just normal usage of inserting, and removing the AC adapter plug, this 2 inch square can crack away from the main body.
This, of course would require a motherboard replacement.

Disassembly instructions for a Satellite A200 and A205 Series laptops. Very close to the A215 Series,

(Don't forget to buy, and use a cheap ESD wrist strap, to prevent static shock to the delicate hardware components, inside your laptop. Average cost is $7)

Aug 04, 2009 | Motherboards

1 Answer

Acer 5920g no power

Your DC Power Jack is bad, or the area of the motherboard where the DC power jack attaches to, is bad.

The DC Power Jack, is the small port where your AC adapter,(Charger), plugs into.
This is an example of an average DC Power Jack, for an HP Pavilion laptop, not installed in a laptop yet,
If you click on the photo it will enlarge.

The DC Power Jack in the photo is upside down, in relation to how it sits on your laptop's motherboard.
Those flat metal pins shown on top, go down through the motherboard, and are soldered on the other side.

1.Sometimes when the 'charger' plug is in the jack, and is bumped, it can crack the solder joints for the DC Power Jack's flat pins. This makes an intermittent contact. Eventually there is no contact at all.

2.Sometimes it's a bad design of the DC jack, and just from ordinary usage of the user plugging in the charger, and removing it, this can crack the solder joints.

3.Sometimes the small area of the motherboard where the DC power jack is mounted, can crack away from the main body of the motherboard.
To explain:
Crude example;
Envision a laptop's motherboard as having a 1 foot square shape. (It isn't. It's irregular shaped) Now on one side attach a 2 inch square. This 2 inch square, represents the area that the DC power jack is attached to. A 'Peninsula', if you will. There are circuit traces that go along a motherboard. Think of them as Very, flat, thin, strips of copper wire. These 'wires' become stretched, and break as the 'peninsula' cracks away from the main body of the motherboard.

Have the DC Power Jack replaced, or the motherboard.
DC Power Jack cost? About $6 to $8 dollars.
Labor? $100 to $150.
The tech has to completely disassemble the laptop, to just the bare motherboard in hand. Then unsolder the DC power jack, resolder a new one in, and reassemble the laptop.
Motherboard cost? About $150 on up. Depends on where you obtain it. (Ebay?)
Labor? $100 to $200.

Jul 12, 2009 | Acer Motherboards

1 Answer

Motherboard issue

It's a power issue. The battery is flat. (No charge present) The AC adapter (Charger) is plugged in. The DC Power Jack has an intermittent contact. (The DC Power Jack is where the AC adapter plugs in. The charger)

The DC Power Jack is broken itself, or where it's soldered onto the motherboard, the solder joint/s are broken. This gives an intermittent contact. To see if this is the issue, try holding the plug for the charger over to one side, when it's plugged into the laptop. You may have to move it side to side, or up an down, to see.

If this is the issue, the DC Power jack costs about $6 bucks. The cost to replace it is $120 to $150.

The tech has to completely disassemble the laptop, until just the motherboard is in hand. The old DC Power Jack is unsoldered, and a new one is soldered in. Then the laptop is reassembled.

IF, you can find a shop! Most of the time the entire motherboard is changed out. Now you're talking Ducketts! $$$$$$$

Dec 23, 2008 | HP (D7580-60003) Motherboard

1 Answer

9400 laptop will not power up

usualy its the dc jack aka direct current jack (the plug behind laptop is broken)

Jul 11, 2008 | Dell Motherboards

1 Answer

Acer 2300 travelmate

you can get seperate dc jacks from here Try not to disconnect the screen as it may never come on again, i would take to a qualified repairer.

Aug 30, 2007 | Motherboards

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