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I have an acer 7741z-4433. I've fixed it many times. One day the battery just stopped charging. So I tried swapping the ram, replacing the charge plug, replacing the battery, starting up without the usb plugged in, starting up with the cd rom and usb plugged in, i tried a different ac adapter, i tried a different set of ram chips. Finally, I replaced the motherboard. The charge and battery lights on the motherboard still aren't lighting up. Computer starts fine with a fresh battey. BUT IT STILL WILL NOT CHARGE...WOW LOL

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  • Jo No
    Jo No May 09, 2014

    Just wanted to clarify, that the motherboard is new and it came with its own ac plug adapter. The voltage on the charger is 19.5, and the laptop requires 19 volts. The second adapter is also 19.5 volts but it's made for toshiba. All I can think of is buying an adapter specifically for acer.

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The match is critical. Look for the values such as AMPERAGE in Milliamps and Proper Voltage as specified by the manufacturer. Failuer to make a pure match could burn up the Motherboard.

Posted on May 09, 2014

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  • Jo No
    Jo No May 09, 2014

    I'm quite sure its correct. The laptop requirement on the back reads like I said in the post "DC Rating ===3.42A

  • Jo No
    Jo No May 09, 2014

    The chargers states OUTPUT:19.5V= 90W

  • Jo No
    Jo No May 09, 2014

    DC rating 19v ===3.42A

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