I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

[kalilinux25]

The problem of the laptop was no display when plug to PSU it tasking 100 milliamps when powering on.
When I check the voltages on the vcore section it doesn't have any voltages 0v







The gpu chip is not getting hot fan is not spinning only blue light
I've done flashing bios

Those anyone has an idea or hint please help me

[mcplslg123]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

check +5v VS and +3V VS lines. It seems on switching you are not getting VS Voltage. Which kbc it uses?? Programmable??

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

check +5v vs and +3v vs lines. It seems on switching you are not getting vs voltage. Which kbc it uses?? Programmable??

+5v is present
+3v is present

kb ite it8987e

[Techtiger]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

after testing VS line test PQ52 +1.05V GFX
PL10 1.5VGFX page 41

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

after testing vs line test pq52 +1.05v gfx
pl10 1.5vgfx page 41

pq52 is present
pl10 has 1.6v

[Techtiger]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

PQ14 +3V GFX present?

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

pq14 +3v gfx present?

yes pin 3 of pq14 has 3v pin 1 has no voltage and pin

[Techtiger]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

check +5v VS and +3V VS lines. It seems on switching you are not getting VS Voltage. Which kbc it uses?? Programmable??

This is missing 3VS PQ14 Gate Voltage is missing 15V ?
Test PR179 both sides & PQ44 all pins you can put a jumper but !!

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

This is missing 3VS PQ14 Gate Voltage is missing 15V ?
Test PR179 both sides & PQ44 all pins you can put a jumper but !!

Yes when I test the PR179 it has 13v only from its source the PR45 has 9v in output drom vin

[Techtiger]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

PR45 VIN should be 19V PR46 divides voltage 9V to PQ44 that way PQ44 OFF MODE
PR179 input even with 13V to pin 2 of PQ14 it should conduct the gate to by pass +3VPCU to +3V GFX test you PQ14 for short or change it

[dj_ricoh]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

Resistence check coil and both pq46 and 47 every pin

[piernov]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

CPU VCore present? PLTRST# present? Is it booting or not?
Usually GPU VCore won't show up if it's not POSTing.
Make sure you use good compatible RAM (*PC3L*).
Could try another known good BIOS.

[on/off]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

CPU VCore present? PLTRST# present? Is it booting or not?
Usually GPU VCore won't show up if it's not POSTing.

Agree...
Look like for POSTing purpose only Intel HD graphics is ON (CMIIW)

Make sure you use good compatible RAM (*PC3L*).
Could try another known good BIOS.

Agree once more....
Also DGPU_PWR_EN come from PCH (SoC)

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

CPU VCore present? PLTRST# present? Is it booting or not?
Usually GPU VCore won't show up if it's not POSTing.
Make sure you use good compatible RAM (*PC3L*).
Could try another known good BIOS.

cpu vcore is present. i dont know how to test PLTRST# ?
Ive done flashing bios
when you plug the psu unit its taking 4 milli amps acouple of seconds

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

Resistence check coil and both pq46 and 47 every pin

coil resstance is 1ohms pin 1 to 5 12 ohms pq47 pin 1 to 5 has 30 kilo ohms

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

page 18
3V MAIN POWER

NO VOLTAGE ON ALL PIN OF Q30

+3V_GFX IS NOT PRESENT ON R371
+3V_GFX IS NOT PRESENT ON R369
Q24 NO VOLTAGE PRESENT ON ALL PINS



Q32 PIN HAS +3V_GFX IS PRESENT

[Techtiger]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

cpu vcore is present. i dont know how to test PLTRST# ?
Ive done flashing bios
when you plug the psu unit its taking 4 milli amps acouple of seconds

PLTRST# U27 PIN 22 test, Voltage in PQ13 pin 2

[kalilinux25]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

PLTRST# U27 PIN 22 test, Voltage in PQ13 pin 2

pin in pq13 has no voltage and pin 1 pin 3 has 13v

[Techtiger]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

can you check PQ52 pin 4 voltage , test PR65 PR179 with Multimeter value ?
test PQ14 pin1 Multimeter Diode mode for value ?
DDR slot pin 30 voltage ?

[lapfix]

Re: I dont have any voltage in gpu core DA0ZRTMB6D0 REV D

PQ13 pin3 must find 9v ,that's the result of voltage divider between PR45/PR46 ..you find this 9 volt at your post n9 , so why you find 13V now!
BTW did you fix it !