Hi.
Laptop brought not switching. RT8206M changed so now there is 3.3VPCU and 5VPCU. So IO(NPCE791L) feed have 3.3V(pin 19,46,76,88,115) but on 95th pin( NBSWON# ) there is no Voltage(0.012V). NPCE791L changed but new one but nothing changed. NBSWON# is not short circuit. Any Idea?

What on S5_ON?
check check their:
0. When BIOS & EC-firmware 100% are working
1. When EC power is present, his quartz working and EC reading the bios data (look data exchange on BIOS chip an oscilloscope)
2. When ACIN = 3.3V
3. When LID_SW# = 3.3V
4. When EC drop RESET from SouthBridge, т.е. EC_RSMRST# = 3.3V
5. When by pressing of the power button the signal ON/OFFBTN# falls to zero and the same signal is broadcast in PBTN_OUT#
6. When from the SouthBridge signals PM_SLP_S3# and SLP_S5# are drop, i.e. voltage on them will be 3.3V

ON/OFFBTN# has no voltage to drop!!! I must be 3.3v till power switch pressed... but no voltage produced.

hi
putting Pull-up resistor now there is 3.3V on power sw. programing EC+BIOS power on but no display. I am not sure from BIOS. Any Working BIOS? M.B is discrete and by soldering POST CARD stays on E3 code. E3 DEBUG_REVISION_2 , I guess it is because of bad BIOS.

Bios Dumped from working one, but still stays on E3 Post Code. any Idea? My guess is PCH or VGA, any idea?

I think it's VGA

Hi back to all.
VGA chipset picked up by BGA. so there is a inflation on the surface of motherboard under the VGA chipset area. I think chipset replacement seem not successful for this kind of problem. Is it possible to make it UMA? I mean This motherboard must boot because of Intel HD graphics but we have no display.