DC power jack repair guide

posted in: DC jack | 523

This guide will explain how to repair a failed or loose DC power jack on a laptop computer yourself.

Disclaimer: I’ve made these instructions only for people experienced with soldering and repairing computers. If you don’t feel comfortable doing this job, please do not open the laptop or you can permanently damage your computer. Take your laptop to a professional repair shop instead.
Use this repair guide at your own risk. :)


For this repair you’ll need the following tools.

1. Soldering iron or soldering station. I use Weller WES51 soldering station and for this job I set temperature to about 800-850°F.
2. I use high-tech rosin core silver-bearing solder from Radioshack with diameter 0.022″ ( Catalog #: 64-013 ). I think standard rosin core solder will work just fine.
3. Desoldering pump for removing solder around component leads. I use Edsyn Soldapullt pump, model DS 017.
4. 99% isopropyl alcohol and tooth brush for cleaning the motherboard from flux.
5. A new DC power jack.

DC jack repair tools

Laptop DC power jack repair guide.

Laptop DC power jack

As you see on the following picture, the solder drop on the positive terminal looks different than on other three contacts. That’s where the problem is. The positive pin is not making a good contact with the motherboard and because of that power to the laptop cuts off when I move the power plug inside the power jack.
I’m going to desolder the power jack from the motherboard, clean contacts on both power jack and motherboard and then solder it back in place – this is the proper way fixing the power problem.

DC power jack bottom side

Start desoldering process with adding some new fresh solder to all three contacts. This will make old solder more flowable, easier to remove.

Removing solder

While heating one of the contacts, remove the solder from this contact using the desoldering pump. Repeat the same steps with all power jack contacts until you remove as much solder as possible.

Sucking extra solder

Grab the power jack and carefully try removing it from the motherboard. Most likely you will not be able to remove the power jack the first time because there will be some solder bridges left between the contacts and traces on the motherboard. Carefully wiggle the power jack without applying any significant force and at the same time heat up all contacts one by one. This will help you to remove the power jack.

Remove DC power jack

The DC power jack is almost removed from the motherboard.
Be careful. Inside the positive hole there is a copper sleeve which connects the terminal on one side of the motherboard with the traces on the other side. If you are removing the power jack with force, you can pull the sleeve from the hole. You don’t want to do that.

UPDATE: If you accidentally removed the internal sleeve, check out this post: How to fortify damaged power jack connection.

So, do not apply any force and make sure the solder is melted when you are removing the power jack. I hope you understand what I’m talking about.

Separating jack from motherboard

After the power jack is removed, clean all oxidized contacts with a knife.

Cleaning power jack contacts

Apply a fresh coat of solder to all contacts on the power jack.

Coating contacts

The power jack terminals will look dirty because of melted flux.

Flux on motherboard

You can remove the flux using the tooth brush and alcohol. It’s not necessary but it will make your job looking clean.

Removing extra flux

Apply a fresh coat of solder to all power jack terminals on both sides of the motherboard.

Coating contacts

This side has been coated.

Cleaned contacts side 1

And this side has been coated too.

Cleaned contacts side 2

Now you can install the power jack back on the motherboard. Put something under power jack so there is no gap between the jack and the motherboard. Now you are ready to solder the jack back in place.

DC power jack installed

Solder all power jack pins.

Soldering power jack

The job is done and the laptop DC power jack is fixed. B-E-A-utiful!
Now just install the motherboard back into the laptop and you are done.

DC power jack fixed


523 Responses

  1. cj2600

    jojo,

    I googled for MSI 1684 and couldn’t find anything.
    Does your laptop have any other number, name? Take a look at the bottom sticker.
    Maybe MSI 1684 is not the model number. Search for any other numbers.

  2. hi!

    i have a msi ms-1684 i open it to see why it was no charging.
    it appears that the dc power jack was broken

    i want to buy a new one but i have no idea what to buy and forgot to take a picture while the laptop was still open

    thanks in advance and great site too!!

  3. Krister

    I have a Fujitsu Siemens Amilo Pi2540, what kind of power jack do i need?
    Thanks in advance

  4. Felix: your dv6810 has a power board. You can replace or resolder the jack, but it’s a pain. The pin layout is very different from other jacks, and the positive pin is very small. I’ve seen them burn out at that connection a few times.

    The light (the ring light) lights even if the motherboard is not getting power (such as when the positive pin is loose in it’s hole). It is easiest to replace the whole board – Hopefully “laptoprepairs101″ will have one. If not, then search eBay (you can get the part number for the board from HP’s Parts site).

    IF “laptopparts101″ has the board, ORDER FROM HIM!!!! I use him ALL THE TIME, for numerous jack repairs we do. He is ALWAYS my first choice for jacks and harnesses. If he doesnt have one, then try to find a reputable seller on eBay.

  5. cj2600

    Julia,

    I have a Toshiba satellite L35-s2316 that has the exact loose DC plug symptoms.

    In Toshiba Satellite L35 laptop the DC jack is NOT soldered to the motherboard. It’s attached to a power cable.
    If the DC jack goes bad, you simply unplug the old harness from the motherboard and replace it with a new one.

  6. Re: “Let me know the laptop brand and model number and I’ll tell you what kind of jack you have inside.”

    I have a Toshiba satellite L35-s2316 that has the exact loose DC plug symptoms.

    Great website–what a wonderful resource and so very well done too!

  7. lizett

    Hi… I have a inspiron e1505 when i plug in to the DC jack , the light on the charger turns off.the computer was working fine one day tried to charged and thats when the issue occur….please if this has happened to anybody please let me know,,,,, thanks,,,,,,,

  8. I have changed out my DC connector and now when I plug up the ac adaptor to try and use the power it starts to spark in the electric outlet when I start to put it in. Do you have any suggestions for this problem? This is my first time attempting anything to do with soldering so I’m not sure what needs to be done to fix it.

  9. spencer

    What a great article this is.
    This has saved me £150.00, and thats if I could have found a computer shop to touch my computer, the replies I had would have been cheaper to go out and buy a new one. I had to strip my computer down from top to bottom to get to the mother board, and I am a complete novice as well.
    I bought the bits myself, and repaired my old Compaq NX9010 myself, and retrieved all my old data.
    Superb stuff, keep up the good work.

  10. Like many before me I had the Laptop DC jack issue. i.e: No power because it won’t connect with the male plug. Looked online for a solution, all only for the tech savvy. Got a couple of quotes..$100 plus . Not feasible given my old laptop being probably only worth that much. However, my files were worth much, much more.

    Obviously a mechanical problem, so i came up with a quick fix that cost me less than 12 cents.

    Exposed about 8mm of some small gauge scrap automotive wire. Carefully inserted the exposed end into the jack where it connects with the plug, pushed in the plug and woohoo, it worked! I then secured the cable to the laptop with a small keyring threaded through the vent opening so the cable won’t rotate and stays in position. This was three months ago, the only drawback being having the power cable permanently attached, which for me isn’t an issue as the laptop now resides on a desk.

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