Question about HP Compaq Armada M700 Notebook

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Battery Won't accept charge, after soldering job

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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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.

Posted on Jun 27, 2008

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Maybe your DC Power Jack which is 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.

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http://www.laptoprepair101.com/laptop/2007/12/06/dc-power-jack-repair-guide/

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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.)
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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.
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