For the sake of knowing, H_PWRGD can be measured, need to remove glue from the side of CPU.
It's measuring 0.04v
I don't know what this signal does
Alecs25
Newbie
Last Activity: 02-18-2025, 01:59 PM
Joined: 07-21-2018
Location: Abruzzo
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Hello Mon2, thanks for your contribution. I have some basic knowledge so i understand what you are saying and it’s very logical, however i don’t know how to proceed further.
The only thing i see is that EC_PCH_PWROK is missing, but should be pulsing…? I don’t really understand what is this signal, EC monitors PCH_PWROK? It’s a feedback?
If i understood correctly, if this signal is missing, all the other signal below will be missing tooLeave a comment:
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Hello!
so:
PCH_PWROK pulsing
EC_PCH_PWROK 0v
H_PWRGD i can't check this, no test point and only under BGA
SYS_PWROK 0v
PLT_RST# 0.03v
Leave a comment:
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Hello! Thanks for following my case, here are the results:
PU1 VCC: 5.07v
VR_ENABLE: Pulsing
VR_READY: Pulsing
25-26 PWM: Both pulsing
Page 52:
Pin 3+29: both pin 5.07v on all 4 IC
[B]pq18 pq19 pq20 pq21, the result are the same for every ic[/B]
pin 5: 4.67v
pin 7: 0v
R 16+8: GND on 16 it's 40.8k, GND on 8 it's 13.5k
[B]pl4[/B]: 4.0 ohm
[B]pl5[/B]: 4.0 ohm
[B]pl6[/B]: 6.6 ohm
[B]pl7[/B]: 6.6 ohmHello! Thanks for following my case, here are theLeave a comment:
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Hello!
I'm really sorry, my bad, i was on a hurry while checking voltages again after replacing the resistor. Yes it's still pulsing.
I checked again as you asked:
PM_SLP_S4#
PM_SLP_S3#
SYS_PWROK
They are all pulsing.
+VCC_CORE 0v
+VCCSA is pulsing
VCCGT 0v
i cannot find VCCGTX on boardview
on pq 18-19-20-21 I've measured #EN_FAULT it's 5v
#H_PROCHOT 0.99VLeave a comment:
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As you were expecting, no change at all, still the same behaviour.
PU5: 1.2VDIMM is missing, i've no pgood on pin 20
Should i look better into this IC?Leave a comment:
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I've barely saw it, that was only pure luck!
No, LOL, I was measuring the wrong chip! I've 0.30v on NVVDDS_PWRGD, no pulsing. Forgot to mention.
By the way, talking about PR82, I've measured it but seems to be OL. I will replace it and check the all trace, then report back!Leave a comment:
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Hello!
NVVDD_PWRGD 0V
+1.2VDIMM_PWRGD Pulsing
H_VCCST_PWRGD Pulsing
NVVDDS_PWRGD 19.12v HOLY S... found the issue right here, just because i was measuring the wrong IC, and i've found R82 completely burnt
Here photo:
[URL=filedata/fetch?filedataid=372089][ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"181","title":"image.png","width":"136","data-attachmentid":3564106}[/ATTACH][/URL]
Should be the issue...Leave a comment:
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[B]"PM_PWRBTN# 3.27v Stable?"[/B]
Yes!
[B]"SLP_S4 and SLP_3 must be pulsing too?"[/B]
I realized signals were pulsing later on, i forgot to recheck those: SLP_S4 SLP_S3 SYS_PWROK.
If it's important i will check them again on Monday.[B]"PM_PWRBTN# 3.27v Stable?"[/B]
Yes!
[B]"SLP_S4 and SLP_3 must be pulsing too?"[/B]
I realized signals were pulsing later on, i forgot to recheck those: SLP_S4 SLP_S3 SYS_PWROK.
If it's important i will checkLeave a comment:
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Ok!
Im now turning it on
SUSPWROK 3.13V
RSMRST# 3.26v
PM_SLP_S4# 0v
PM_SLP_S3# 0v
SYS_PWROK 0v
From bottom to top:
EC_PCH_PWROK 0v
H_PWRGD can't check only under BGA
PCH_PWROK 0v
CPU_PWROK 0v
+VCCGT 0v
+VCC_CORE 0v
from now on there are a lot of signal/voltage that pulse, i will write the max reading i can get after 2-3 blinks, i don't know how much can this be accurate since i'm just using a multimter
EC_ALLSYSPG 0v (pulses to 0.40-1.40V when HDD LED Blinks)
...Leave a comment:
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Hello!
Sure, i'll try my best: fan is not spinning, nothing seems hot (used thermal camera), no caps lock reactions. The only reaction i have is the HDD led blinking as soon as I short PWR_SW
RTCRST# 2.69v
SUSPWROK 0v
SUS_ON 0v
Pwr_SW# 3.25v and 0v when pressing
RSMRST# 0v
PM_SLP_S4# 0.12v
PM_SLP_S3# 0.02-0.00v
(don't have an oscilloscope for the RTC crystal)
SYS_PWROK 0.05-0.10v
This doesn't seems promising ahaha!
EDIT: I've done all this readings by having the pc "turned off"...Leave a comment:
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MSI MS-16J9 - Not turning on, no shorts found
Hello,
i have this MSI which is not turning on, a bit of history:
It was not used for months, the owner replaced the battery because it leaked, even before the replacement the laptop was not starting, just LED HDD blue blinking and so the charger led also blinking. This behavior is still present.
The only thing i done was to reflash SPI, nothing else done. I've just checked for voltages around the board.
19v seems present and so is 3VALW and 5VALW. I'm not that expert, there is the schematic with the power sequence, but i never understood how to do the checks,... -
Hello there, a leecher since 2018, finally introducing myself and posting. Started a new work in the repair scene since a year or so, all by myself.Leave a comment:
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