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I need to replace a dc jack and get a power adaptor that fits it correctly so that I do not keep breaking the dc jack what do i do

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Now, I have no idea on what we are working.
If it is a motherboard, then you need to order the correct plug replacement, and then study and compare where it goes, and make absolutely sure you use a clean solder gun of possibly 30 watts. Use the very small solder available at most stores like Radio Shack.
If you never soldered anything, then this is not a job you want to do. Get some help from someone who has done work of this type.
Because, if you do not do it right, you can destroy the board.

Because the circuit boards on anything are delicate, and cannot take too much heat, you have to know what the boundaries are and how to handle a project like this.

Posted on Sep 11, 2009

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1 Answer

AC Power Adaptor LED won't stay on to power PC


First you you should test the AC power adaptor properly, then if it is in good conditions is important to test the electric circuit in the motherboard in order to find any trouble. There is a SMD fuse between de DC power jack and the rest of the circuit.

Jan 06, 2014 | Computers & Internet

1 Answer

No power. no lights. I have checked the power cord and its like there is no power


Firstly check that there is power to the Ac adaptor, this can be done by seeing if the green power indicator light is on on the adaptor body.

If not, then you have a defective plug, blown 3 amp fuse or the adaptor is fried (not uncommon)
If you have a multimeter, you can set it to 20 volts DC and with the adaptor pligged into the mains, test the DC JACK end! by putting the red probe to the inner part of the jack and the black to the outer part, if no reading, then assume the adaptor is dead.

Best way to check is by testing with an adaptor (universal charger type) to see if that works.

Assuming the adaptor is putting out power, check the output with a multimeter as above and see if the voltage is at the correct level (think its 19 volts on that model). If it is, then move on to the DC jack connection on the netbook

Watch the power indicator on the adaptor, if it is not steady green (ie flashes on and off), ther power is not making a circuit in the alptop and is being "spat back", this can be anything from a blown circuit board in the power circuit, to something as simple as a motherboard main fuse.

If there is a staedy green light but no power at the netbook and the jack connection at the netbook is firm and not sloppy or loose, then you will need to have the netbook dismantled and the fuse checked ( this will also need to happen if the jack connection is loose.

Sometimes, removing the battery, pressing the power button on (with the adapator unplugged) for 30 seconds and repowering with the ac adaptor can reboot the system, but I'd be inclined to suspect the adaptor first

Apr 22, 2011 | Acer Aspire One PC Notebook

1 Answer

Dc jack of labtop getting vey hot


A common weak spot on most laptops is the DC power jack. If someone trips on the wire while you have the power adaptor plugged into your laptop, chances are that the power jack will get damaged.
On most laptops the DC power jack is soldered directly to the motherboard and there are only three or four small pins holding it in place. Unfortunately that makes the power jack quite weak. Any sideways pulling of the DC power cord while attached to the laptop will usually dislodge at least one of these pins, breaking the solder around it. Modern laptops use quite a lot of power, from about 70W to 120W or even more. The bad electrical connection from the dislodged pin will cause sparks and heating that will eventually burn a hole through the motherboard and can even be a fire hazard.

The usual signs of that are:
  • The battery is not charging properly or stays at half charge despite that you have been using the power adaptor.
  • The screen flickers (the brightness is changing) while the power cord is plugged in. This is caused by the laptop switching between DC power (screen is brighter) and battery power (screen is dimmer).
  • The DC plug gets hot after a few minutes of use and may even smell of burning.
  • There are "scratching" sounds coming from the DC jack.
You need to take the unit apart and check/resolder the DC jack on the system board.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe

Feb 15, 2011 | Computers & Internet

1 Answer

Turns off after few seconds with batery or with the power cord only. never turn on the monitor, just fans sound for 5 seconds and stop rotate and the start blue botton light remains on.


Check the battery is charged first and that power is getting to the laptop by the DC Jack. You can test this by setting a multimeter to 20V DC and touching one probe to the inner part of the DC jack and the other probe to the Outer (earth) of the DC jack (red to inner black to outer). I'm assuming the fuse in the plug of the adaptor is ok...

If there is power getting to the DC jack, check the connection to the DC jack socket on the motherboard, if it feels sloppy or loose, this is where the problem may be.

If the fit is tight and the AC adaptor is supplying power, you could have a ram issue. Romove each ram module in turn and try to see if the laptop boots then, if one stops it booting, it needs replaced.

Failing this, you could have a fault on the motherboard which will need technical investigation

Jan 02, 2011 | Computers & Internet

2 Answers

My gateway ml6732 laptop will not power up...no lights come on when plugged into the power. Could there be a problem with the on/off switch?


Unlikely as even with the power switch off the power led would show current from the AC adaptor was reaching the laptop. Try testing the AC adaptor first by plugging a volt meter into the DC jack, with one probe set to the inside of the jack and the other to the outside, set at 20 volts and see if you get a reading.

If the power is reaching the DC jack, then check the connection at the jack port for tightness and make sure the jack is a good fit

Try removing the battrey and using it on AC power alone, sometimes a failing battery will cause problems

If this fails, it is possible that the internal fuse on the motherboard has gone

Dec 30, 2010 | Gateway ML6732 Notebook

1 Answer

Power issue Toshiba Satellite m35x-s161


Unfortunately there are many sellers of DC jacks for your model and several others. Some of these people sell sub-standard DC jack replacements which are not designed for your laptop, but will fit in the same hole. If the mount points for your DC jack didn't fit the same pattern as your original one then it simply is not the right jack for your laptop. You can suffer issues such as improper grounding, voltage applied to ground and vice versa with some severe consequences. This can damage not only your charging circuit, but may well cause your battery to overheat and rupture. Remember, that not all DC jacks are designed the same way, In fact most manufacturers design their jacks as different from the competition as possible, whether this is their intent or not is irrelevant. Your Dc Jack, however suffers from the dreaded floating pin problem. The main bullet type pin you see at the middle of your jack tends to separate and spin freely, and can be repaired by simply soldering the pin mount on the back. Try repairing the pin on your original jack and reinstalling until a new jack can be found and I'd be willing to bet your problem goes away.

Mar 14, 2010 | Computers & Internet

1 Answer

The laptop will not come on. Once you have pluged it in the power light stays on for about 3 seconds and then goes off.


I'd be inclined to suspect a faulty charger. Before condemming it though,test for:
Power lead fits snugly into adaptor
Adaptor lead fits snugly into DC jack
IF the power light comes back on after the laptop is unplugged, it would appear to point to a short on the motherboard, or possibly a faulty or damaged DC jack

Feb 09, 2010 | Compaq Computers & Internet

2 Answers

My megadrive2 ac/dc adaptor keeps springing out the back and hence no power how do i fix this?


a few things to try. You can get another known working ac adaptor and see if that springs out of the back as well so you know at that point its not an AC Adapter problem if it does.

If the AC Adapters aren't staying in place then the DC Jack on the megadrive is faulty and it would be a matter of finding a DC Jack for the megadrive 2 or find a faulty megadrive 2 where the dc jack is good.

Then if you have soldering skills, you can take the good one off of the one machine and take the bad one off of the other megadrive 2 and replace it with good dc jack. Basicially unsoldering the good one and the bad one and soldering the good one onto your megadrive machine.



Aug 30, 2009 | Sega Megadrive Black Console

2 Answers

Notebook won't power up with AC Adapter plugged in


your header for adaptor has worn out, or your AC adaptor had gone out. you can buy a UNIVERSAL adaptor which will fit any laptop from Newegg, fry's, office stores, etc. is a new adaptor does not work then you have to replace inside header. you can try taking a small knife and using it rub around inside to try to "revive" contacts. it is an expensive replacement cost

Apr 26, 2009 | Toshiba Satellite A15-S157 Notebook

1 Answer

Pin stuck in power adaptor


It is broken, you are going to have the DC jack replaced.

Dec 27, 2007 | Acer Aspire 3680 Laptop

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