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Acer 5750 laptop. advice on which rail this fault is

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    Acer 5750 laptop. advice on which rail this fault is

    I took this motherboard out and it's on the bench now. Symptoms are I get fanspin and blue led light for a second or two and then it turns off, this repeats 4 times and then turns off completely. Any tips on which rail might be causing this?

    #2
    Re: Acer 5750 laptop. advice on which rail this fault is

    Many, but you can start by see if there's a short to ground .
    Make the basic tests : visually inspect all the components .
    what about 3/5 v always ! what about 3/5 vs !

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      #3
      Re: Acer 5750 laptop. advice on which rail this fault is

      mine to and i foundout the pch was extremly hot

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