Acer da0zqmmb6f0 rev f

[kalilinux25]

Hope someone can guide, having a hard time finding where to find the issue of this laptop, it comes on and off for a second looping. Ivecheck the 3v present 5v is missing but if power pressed the 5v is stable not pulsing . Is it a bios issue? Im currently not sure if its is, need to buy programmer first if that so . hope some have a hint

[kalilinux25]

Re: Acer da0zqmmb6f0 rev f

SPL_S4= 0v-1.8v - 0v
SLP_S5= 0v-1.8v - 0v
AC_PRESENT- 1V stable
SOC_RSMRST# - 3.3V STABLE
RSMRST# -3.2V STABLE
#3VPCU -3.3V STABLE
S5_ON -3.3V STABLE
VCCRTC -3.3V
PLT_RST# MISSING
SRT_CRST#- 3.1V STABLE
MAINON- 0V -3.3V - 0V

[kalilinux25]

Re: Acer da0zqmmb6f0 rev f

OFF STATE
5V CONNECTION
NB671L (pu6)
PIN1 - VIN 20V
PIN2 - GND
PIN3 - LP# 0V
PIN4- PGOOD 3.2V
PIN5 ,6 - NC
PIN7 - VOUT - 0V
PIN8,9,15,16 - SW - 0V
PIN 10 - BST - 0V
PIN 11 - VCC - OV
PIN 12 - FB - 0V
PIN13 - EN - 0V
PIN 14 -GND

[mcplslg123]

Re: Acer da0zqmmb6f0 rev f

5V will appear on coil only after triggering-so that's fine. Are you getting display for a brief moment or it just turns on and off without display?
Have a look at Page33 of schematic

[kalilinux25]

Re: Acer da0zqmmb6f0 rev f

5V will appear on coil only after triggering-so that's fine. Are you getting display for a brief moment or it just turns on and off without display?
Have a look at Page33 of schematic

yes turn off and dont have display loop restart 800mAp to 0 no led light present

[kalilinux25]

Re: Acer da0zqmmb6f0 rev f

5V will appear on coil only after triggering-so that's fine. Are you getting display for a brief moment or it just turns on and off without display?
Have a look at Page33 of schematic

maybe a problem for thermal protecction?
ive tested all resistor inside the page 33 all in good reading no shorted and low resance on all PQ

SYS_SHDN# -3.2V
PQ15- PIN 3 - 9.2V

TEST PU10A
OFF STATE
1-0V 2.8mOhms
2 -5.1v stable
3. 2.3v
4,5,6- gnd
7- NC
8 - 0V

ON STATE
1. 0V
2.4.3V
3.2.3V
4,5,6- gnd
7- NC
8 - 19V

[kalilinux25]

Re: Acer da0zqmmb6f0 rev f

After tesing the mosfet Ive focused on the ram voltage ic , due I have a hint and remove the 2 mosfet to test for low resistance PQ27 AND Pq26 but after test mosfet was fine and Put everything back and retest again. Unit works!! due mybe to cold solder joint of the mosfet?