A year ago my laptop got the DC Jack jerked and broken out of it. Recently I bought a new jack and soldered it onto the motherboard. It works fine, the computer powers up, but it doesn't even attempt to charge the battery. At first I assume the battery is just dead. But it was a decent battery, and I have to wonder, could I have mis-soldered a ground (negative lead) in the motherboard, or something else, that would prevent it from pushing a charge into the battery?
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Re: Battery Won't accept charge, after soldering job
If the ground isn't soldered properly that could happen. If you run your computer in your car and you use a power inverter plugged into the cigarette lighter and your battery in, that can cause problems charging the battery as well.
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Sounds like your DC Power Jack where the Power Cord plugs into the computer is bad.
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.
If the DC Power Jack is bad, then eventually the
battery is going to die and you won't be able to boot your laptop. If
the dc power jack is bad, the ac adapter power cord can't charge the battery.
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.
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.
you have to strip down the laptop so you can access the underside of the motherbord then you need to desolder the solderd connectors and remove the DC jack
then put the new DC jack in its place and solder back in place
please note this is quiet a big job and requires knowlage of laptops
Try another known working battery in the laptop and see if it charges, if it doesn't then its going to be a problem with hairline cracks in the dc jack on the laptop. The solder points underneath the dc jack if they have hairline cracks in them won't allow the battery to charge. Basically the laptop would need to be taken apart and the motherboard taken out.
If you have soldering skills, all that needs to be done is to put new solder on the solder points that hold the dc jack in place.
If after you do this the battery still wont charge then you know for sure the connector is bad and then the connector would need to be replaced.
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.
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.
The laptop would have to be taken apart and the DC connector resoldered.
This would cost $75 - $100. Enter your zip code in the box on the right hand side of the FixYa page to find someone close to you. If I could be of further assistance, let me know. If this helps or solves the issue, please rate it. Thanks, Joe
search ebay for a DC Jack for your model. Disassemble your laptop. Desolder the broken DC Jack from the laptop motherboard. Solder the new DC jack onto the motherboard and reassemble laptop. If your not experienced in soldering of disassembling laptops I would recommend you hire someone to do this job. If you wish contact me email@example.com