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Can't charge my laptop battery

Discussion in 'Electronic Repair' started by Greg L., Sep 5, 2006.

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  1. Greg L.

    Greg L. Guest


    Back from work yesterday, I found a laptop in a trash (Maxdata Pentium
    IV, 45Gb HDD, DVD R/RW, 15" display). The RAM was missing, but this
    laptop uses standard DDR memory. The laptop also comes with a power
    adapter (20V DC / 6A)

    The battery was charged enough to boot the laptop up, but I'm not able
    to charge it again. When I plug the power cord in the laptop, the LED
    on the power adapter starts the blink and I can hear a small buzz. The
    buzz comes also from the computer and it smells like hot electronic
    components (so I removed the power cord). I tried this with and without
    the battery : same result !

    I can't say if the power adapter is dead or if the power input unit of
    the computer needs to be repaired.

    Here are some questions :
    - Can I easily change the power input unit of a laptop ? I don't think
    so but ...
    - Do some generic battery charger units exist and do you know where to
    find them ?
    - Do you know how to bypass the power input unit of a laptop to charge
    the battery inside the computer ?

    Please excuse my English, my mother language is French.

    Thanks !

  2. mc

    mc Guest

  3. James Sweet

    James Sweet Guest

    I just fixed one with a similar problem last night, the solder joints at
    the power jack had cracked and were arcing, the whole connector got
    pretty hot and it melted the plastic a bit. It could also be a shorted
    component in the charging circuit.
  4. Greg L.

    Greg L. Guest

    Thanks for your replies !

    I hope I'll be able to see what's wrong on the motherboard. I don't
    think that the problem comes from the power adapter, but I'll test it


    James Sweet a écrit :
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