GL553VW REV 2.0 No display

[kalilinux25]

L800 P_CHG_LX_30 - 8.38V
L80-05 +VCCSA13 -1.053
2 +1.35VO_VGA -0V
1 +VCCGT 0V

2 +1.2VO_DDR -1.215V
1 VRM_PWRGD 3.3V

hope someone can guide me if my processor is already dead?

[kalilinux25]

Re: GL553VW REV 2.0 No display

L800 P_CHG_LX_30 - 8.38V
L80-05 +VCCSA13 -1.053
2 +1.35VO_VGA -0V
1 +VCCGT 0V

2 +1.2VO_DDR -1.215V
1 VRM_PWRGD 3.3V

hope someone can guide me if my processor is already dead?

Im missing my voltage at DRAMRST
also I dont have my 32khz

[kalilinux25]

Re: GL553VW REV 2.0 No display

Me_ac_present- 3.2v
suswarn#/suspwrdnack 0v
pm_rsmrst# 3.2v
pm_susc# -3.3v
pm_susb# 3.3v
sys_pwrok 3.2v

[kalilinux25]

Re: GL553VW REV 2.0 No display

so hard to test some resistors beacuse I dont have access to a schematic

[kalilinux25]

Re: GL553VW REV 2.0 No display

hope someone can help

[lapfix]

Re: GL553VW REV 2.0 No display

Same here , but ...all voltage are present expect
+VCCGT 0V

and Dramrst and CPUdramrst

Dramrst at pin 108 ram socket = 0.060v
Trace this line until R203 470 OHM , resistance are ok and got 1.2v from one side and 0.060v from other ....No short to GND..

Try official bios and one from SMDFlea but same issue.

PLT-rst are present

present too : all-sys pwrgood / vrm pwrgood / Pm- pwrok / vccgt pg / syspwr-ec .

What to check else!!
thank you

[mcplslg123]

Re: GL553VW REV 2.0 No display

VCCGT at 0V is not something to bother. On many boards it doesnt rise(If you test with dso, you will get a pulse for a fraction of second). However, when dramrst# is pulled low, there is no question of VCCGT rising. Dramrst# is controlled by cpu and the resistor is fine as per your observation. Bios could be a factor but you have already ruled that out.

So in my opinion you are staring at cpu fault.

[myth77]

Re: GL553VW REV 2.0 No display

Boardview attached..with value of resistors. This boardview is a little strange...when you open it you have to flip board horizontally to show you the correct pins on board.

[usyusy]

Re: GL553VW REV 2.0 No display

under microscope, traces could also be checked, if they are missing on somewhere