Asus rog G531GW

[jasko_jacker]

Hi all +VCCSA
I solved an issue related to one of the MOSFET controllers that generate the voltage for the CPU -> +VCCSA. Now the board powers on, but in addition to not displaying anything, it turns on as soon as it is powered, even with just the battery. All voltages are present, and the u3202 -> SLG4E42553VTR all line are stable. I have tried various BIOS versions as well as replacing and reprogramming the ITE chip. Any ideas on what to check? I would add that when the card turns on the bios does not reset as it should happen when the battery or RTC battery is not present

LINK to schematic https://www.badcaps.net/forum/troubl...51#post1675351

[fauzanmint]

try checking ALL_SYSTEM_PWRGD

[jasko_jacker]

try checking ALL_SYSTEM_PWRGD

Thank you for the response, but all_system_powergood is stable. Could it be a problem with the CPU causing this behavior? I will try changing the CPU controller PU8001 NCP81215ADMNTXG, even though I don't like changing components without understanding if they are damaged. The strangest behavior that I have never seen in many years is the system starting up just by connecting the battery

[jasko_jacker]

I have seen that a large part of the cards with a short on the CPU power supply, even after restoring the line by replacing the controller or the mosfet, turn on but do not display. Since the CPU has normal values and the problem is probably related to the CPU itself, what should we check?
I have an acer nitro with i7 10th with the same problem but cpu-> gnd < 1 ohm.....

[piernov]

10th gen Comet Lake CPU can measure pretty low in resistance to ground (unlike Ice Lake which measures high due to FIVR). However, when the VRM IC dies the CPU never survives on these. Very common problem. People really need to stop buying "gaming" laptops…

[jasko_jacker]

For anyone interested, I can confirm that the problem on the ROG was the CPU, replaced now the card works correctly. Also compliant that the it8225vg, although it should self-program on this card, does not happen and must be programmed with vertianov or svod

[jasko_jacker]

I am waiting for someone who can confirm that the low ohm value (< 1 ohm) of the i7 10750h CPU power supply line is normal

[mcplslg123]

its usual to measure 0.9ohms -1.0 ohms on cpu coil for 10the gen gaming.