Lenovo Z580 led flashing then off

[robrock1]

Hello i got this lenovo z580 when you press the power button led`s are flashing then imidiatly off, you can press the power button again it always flashes then off. What i've tried so far:

flash EC & Bios
Reflow chipset
Remove Network IC and Sound IC

[khaahk]

Re: Lenovo Z580 led flashing then off

Some secondary power rail shorted? Tried to measure gpu, cpu, pch rail resistance?
Is there enough time to measure secondary voltages to see which ones come up?
Another cpu? Without memory?

[robrock1]

Re: Lenovo Z580 led flashing then off

tried everything already also no short voltages are there, i think its the chipset that is faulty.

[kisk]

Re: Lenovo Z580 led flashing then off

It does sound like GPU failure. Try a more aggressive reflow or reball (preferable).

[mohamed.mostafa]

Re: Lenovo Z580 led flashing then off

i need bios dump of z580 , please upload robrock1

[alihomee]

Re: Lenovo Z580 led flashing then off

so did u slove it .i also have same problem with same model when i run it without ram it works and does not goes off but if pluged memory it turns off imidiatly

[alihomee]

Re: Lenovo Z580 led flashing then off

i need bios files please

[alihomee]

Re: Lenovo Z580 led flashing then off

anybody

[mohamed.mostafa]

Re: Lenovo Z580 led flashing then off

here bios dump

[computersss]

Re: Lenovo Z580 led flashing then off

thanks boss

[ktmmotocross]

Re: Lenovo Z580 led flashing then off

u must have some short maybe a capacitor in memory power rail

[ghojariya abdul]

Re: Lenovo Z580 led flashing then off

in my case i found one brown capasitor near right click button was leaky, t shows 4 resitons on buzzer mode.of multi meetar.

[ciki]

Re: Lenovo Z580 led flashing then off

Have same problem did u fix??

[Grof_mo]

Re: Lenovo Z580 led flashing then off

whether this bios responsible for ideapad Z585?

[memoslar]

Re: Lenovo Z580 led flashing then off

Finally what was the problem, i have the same issue..

[ciki]

Re: Lenovo Z580 led flashing then off

Had same problem reflash bios or change ,there 2 bios chip i had case that one is ok second is bad after replacing them laptop works fine

[memoslar]

Re: Lenovo Z580 led flashing then off

The problem solved! Thank you very much. I changed also both 2 bios chip. THANK YOU !!

[ktmmotocross]

Re: Lenovo Z580 led flashing then off

did u try to look after bios communication?

[Ashwani jangir]

Re: Lenovo Z580 led flashing then off

plz help me ...i need a bios lenovo z480

[ovyyman]

Re: Lenovo Z580 led flashing then off

i was the same problem with led flashing an then turn of , i fix wit bios flash an than work fine , and than i pull out power cord whit batery inside and the laptop turn off automatical , now i hawe short circuit on main rail , i verify many capacitors withouth find the short circuit , i hawe short circuit on sideback of gpu motherboard maybe the cip is shortcircuited but i"m not shure , anybody knows any schematic diagram for this model , thanks