Asus N552VW

[JustX]

hello i have this laptop when i connect it to power supply it turns on but only 0.35a. i checked all coils as i expected i had no voltage on cpu coils i removed the coils and still no voltage, i checked mosfet driver ncp81151 i have these voltages
pin 1 5v
pin 2 2v
pin 3 4.9v
pin 4 5v
pin 5 0v
pin 6 GND
pin 7 0v
pin 8 0v

[Techtiger]

Re: Asus N552VW

Flash Bios with a working one back up old bin

[JustX]

Re: Asus N552VW

i did that still the same
any suggestion? thank you

[JustX]

Re: Asus N552VW

im really stuck with this one, need some help. i would be grateful for any help

[Techtiger]

Re: Asus N552VW

Find out for DRAMRST & PWRGOOD Signel

[JustX]

Re: Asus N552VW

based on boardview i checked DRAMRST# and i have 0.06v on it and i couldnt find pwrgood

[Techtiger]

Re: Asus N552VW

based on boardview i checked DRAMRST# and i have 0.06v on it and i couldnt find pwrgood

Depend on the platform it should be around 1.5 -1.35V Tracy back The process that need this signal

[lapfix]

Re: Asus N552VW

Did you just flash your bios with another /same version and clean me

[JustX]

Re: Asus N552VW

sorry for late respond, i tried couple of bios dumps and result was the same, i have uploaded boardview for this model on my post dramrst# i think comes from pch. is it possible problem is from there? this pch seems has been replaced though

[Techtiger]

Re: Asus N552VW

based on boardview i checked DRAMRST# and i have 0.06v on it and i couldnt find pwrgood

what is the voltage on PL8601 ? if no 1.2V trace it Back

[mcplslg123]

Re: Asus N552VW

DRAMRST will come after cpu vcore. So no point probing it now. Check ram requirements first and see if cpu receives ram supply(1.2v if ddr4, 1.35v for ddr3 pc3-L).

[JustX]

Re: Asus N552VW

what is the voltage on PL8601 ? if no 1.2V trace it Back

sorry for late respond i was away.

i have 2.5v on pl8601 and in boardview it says it should be like this or am i wrong?
i attached picture from boardview

DRAMRST will come after cpu vcore. So no point probing it now. Check ram requirements first and see if cpu receives ram supply(1.2v if ddr4, 1.35v for ddr3 pc3-L).

i have 1.2 on pl8600 and 2.5 on pl8601

[Techtiger]

Re: Asus N552VW

now check R5804 R5812 R5805 R5807 SL0401 R0401 both sides

[JustX]

Re: Asus N552VW

now check R5804 R5812 R5805 R5807 SL0401 R0401 both sides

R5804 = 3.4v on both sides
R5812 = 3.4v on both sides
R5805 = 3.4v on both sides
R5807 = 3.4v on both sides
SL0401 = i didnt find this one but there is sl0601 that has 2.6v
R0401 = one side is gnd and the other side has oV [SM RCOMP0] this line only has another net that comes from cpu

[Techtiger]

Re: Asus N552VW

R5804 = 3.4v on both sides
R5812 = 3.4v on both sides
R5805 = 3.4v on both sides
R5807 = 3.4v on both sides
SL0401 = i didnt find this one but there is sl0601 that has 2.6v
R0401 = one side is gnd and the other side has oV [SM RCOMP0] this line only has another net that comes from cpu

for the R8507 pin 1 should be 1.2V & pin 2 3.3V
D5801 pin 2 is connected to R5807 pin & PU8601 pin 10 is connected D5801 pin2
maybe R5807 or D5801 faulty find out , R0401 one side cannot be GND if so remove it test it out of the MB then test the PAD pin 1 2 witch side is short ?

[JustX]

Re: Asus N552VW

for the R8507 pin 1 should be 1.2V & pin 2 3.3V
D5801 pin 2 is connected to R5807 pin & PU8601 pin 10 is connected D5801 pin2
maybe R5807 or D5801 faulty find out , R0401 one side cannot be GND if so remove it test it out of the MB then test the PAD pin 1 2 witch side is short ?

i chkd both r8507 and d5801 are healthy, ichkd them outside of mb, i changed d5801 anyway. stillthe same . is the ic faulty? should i buy and replace the ic?
and about r0401 it says it in boardview that one side is GND :