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Old 06-22-2014, 11:20 PM   #1
sabya
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Post 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 http://kythuatphancung.vn/uploads/do...ries_(z03).pdf

Last edited by sabya; 06-23-2014 at 12:34 AM.. Reason: to add link of system block datasheet
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Old 06-24-2014, 08:36 AM   #2
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Default 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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