Asus N53sv not powering on

[JustX]

when i remove bios ic i have all voltages on board (3.3,5 and voltages on bios pins except pin numer one) and when i put it backk all of em are gone

[jasko_jacker]

Re: Asus N53sv not powering on

The cmos battery is in place with a good voltage ?

[JustX]

Re: Asus N53sv not powering on

yes it is, im really stck with this one.

[Spider1211]

Re: Asus N53sv not powering on

Try replacing the BIOS chip with a known good one.

[JustX]

Re: Asus N53sv not powering on

i did that still the same i chked i put down the bios chip and lift pin one and i have all voltages and other pins of bios chip, but when i connect pin one laptop goes dead

[Spider1211]

Re: Asus N53sv not powering on

What is the resistance to ground on pin 1?

[JustX]

Re: Asus N53sv not powering on

What is the resistance to ground on pin 1?

with red prob on pin 1 i get 0.8 mohm
with black prob on pin 1 i get 0.4mohm

[Spider1211]

Re: Asus N53sv not powering on

mohm = milli ohm
Mohm = mega ohm

If your reading is milli ohm, you have a short on that line.

[JustX]

Re: Asus N53sv not powering on

mega i meant Mohm

[SMDFlea]

Re: Asus N53sv not powering on

The problem could be with the PCH or EC.Checck by removing R2837,then check voltage on bios pin 1. SL2802 pin 1 goes to pin 101 on the EC through R3050

[Spider1211]

Re: Asus N53sv not powering on

Wasn't notified of new comments. Anyways, agreed with SMDFlea. Remove the resistors mentioned and put them back one at a time to narrow down if issue is with PCH or EC.

[JustX]

Re: Asus N53sv not powering on

The problem could be with the PCH or EC.Checck by removing R2837,then check voltage on bios pin 1. SL2802 pin 1 goes to pin 101 on the EC through R3050

thank you for responding
i did that already and nothing happend in the end i changed pch and ec on the board and still the same at somepoint i changed charge ic bq24740 and then i had low voltage o pin 8 with bios chip on board and my pwm was getting hot i changed that too and chkd mosfets and didnt find solution. i was hoping fixing this one cuz i was couros why this is happening
but the costumer is in a rush so i have to let it go