acer aspire 4520 not powering up

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  • sabya
    New Member
    • Jun 2014
    • 6
    • india
    #1

    acer aspire 4520 not powering up

    I have acer 4520 laptop suddenly turned off & not turning on at all. No led, no power up at all, completely dead. Only battery charing led woking also battery is charging ok. But laptop dont start at all.
    I have checked Tps51120,it has 5v & 3.3v standby. Power button has 3v & on pressing power button I get 3.3v at RSMRST & S5-ON pin both. But cant proceed further as I dont know what to do next.
    So please help me here. Is it fault of tps51116 or nvidia chip. How to find?


    Link for datasheet https://cdn.badcaps-static.com/pdfs/...b2e57477be.pdf
    Last edited by sabya; 06-22-2014, 11:34 PM. Reason: to add link of system block datasheet
    Tags: None
    • sabya
      New Member
      • Jun 2014
      • 6
      • india
      #2
      Re: acer aspire 4520 not powering up

      Please anybody administrators,technician,repair specialist help me in this.
      Can anyone in this whole forum unable to help me out?
      Please I request everybody to look into this & help me.

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