Hi,
working on a ASUS ROG STRIX GL702VSK 60NB0DZ0-MB1260 that does not power on. At the PQ8900 PIN2 (P_CHG_ACMOS_G_20) I am receiving 24.7V and PIN1 (P_CHG_ACMOS_S_20) 20V, however when I place the PQ8901 P_CHG_ACMOS_G_20 it drops 0V. I don't have the replacement mosfets ( N-MOSFET QM3058M6AC PRPAK5*6
UBIQ) however will any N-channel mosfet with similar parameters work ? I also found that PCI8703, PCI8701 are shorted. any help would be grateful.
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-
Yesterday, 04:34 PM
-
I have an Asus G14 (GA401QM) that has a power issue. Originally the board had a shorted 5V rail and dead EC. I reballed a working EC, soldered it on, and I resolved the 5V issue by replacing the APL6012 and the low side 5V mosfet. Resistances on all power rails are healthy now, but 20V does not make it through the first MOSFET. 20V is present on the drain of the first MOSFET, but there is no voltage on the gate or source.
When diagnosing this issue, I thought that the issue was due to the BQ24800 chip not outputting the correct signals so I soldered on a known working chip and the...Today, 01:30 PM -
Good afternoon, I need the diagram and boarview for the board Lenovo GV453 NM-D121 rev: 1.0.
thank you so much.Yesterday, 06:17 PM -
Need help here...
I'm new on the forum and I'm not professional in electronics so i ask sorry in advance for eventual errors...
As title says, i have a LA-H323P dead.
Now, little background.
The computer was working fine, just seems that the cable of screen was dying because it had the classic color problem, sometimes green, sometimes violet, sometimes perfect, but anyway working.
When i opened it the battery was so fat that was seriously near to explode.
So i removed the battery... and turned on the notebook... that was, again, working perfectly fine....04-28-2024, 03:31 AM -
please i need unlock BIOS unowhy Y13 2021
Production year : Aout 2021
Model : Y13G011S4EI
Motherboard : EM_IG116_200b_ene_F_V1.0...05-06-2024, 03:59 PM -
Hey guys looking for the Bios for an Asus ROG G713PV-DS94
Motherboard Number is g713p-mb-VGT 6050A3468901-MB-A01
Serial Number is R3NRKD03613412E
i am not sure if any additonal information is needed if so let me know and i can update this post. Things i have tried are to download the BIOS directly from Asus but that file is a .329 file and is 32MB as opposed to the 16MB file i need. Scoured high and low and cant find this darn BIOS anywhere! Much appreciated!!...Today, 02:29 PM -
Hi Community,
I've got the above model that activates the relay (clicks) and powers on the LG logo power light on when turned on. It then almost immediately turns off. I not noticed any image on the screen or heard any sound during this brief period.
Checks show:
3.5v on SMPS on (in off state, no other voltages present incl pwr on)
On pressing power button > the 3.5 pwn on voltage, 12v and 24v lines appear on the SMPS connnector between the main the SMPS but then all drop the zero in 1-2 seconds
Disconnecting 24 to TCON connector and powering on shows...Today, 02:42 PM -
Hi friend, I've this notebook HP Gaming 16-a0006nl with QUANTA DAG3JBMB8D0 that won't power on.
I start checking first mosfet and they seems to be ok.
On power button I get 3 that go to 0 on pressing, and come to 3v on release.
After I check charge ic that is BQ738H
I write here measure with battery and ac
19
19
19
25
3
1.9
0
3.1
3.1
1
11
11
11
gnd
0
6
10
11
11
19
I've 0 on pin 7 IOUT and on pin 15 LODRV.
...Today, 07:09 AM -
I have an RTX 2070 Super from evga with a blown up IC. With the IC on the card, pin 17 had a short to ground. This pin is connected to the 5V rail by R993, a 0hm resistor. I removed both U610 and R993, to discover that the 5V rail has 800 Ohms of resistance to ground. After checking some resources online, i found a picture which describes the usual measurements a Turing series GPU should have in order to "work properlly". Interestingly enough, this gpu doesn't have U31, the IC responsible for the creation of the 5V on the card, as well as no L47.
Are these 800 ohms rigth...Today, 03:10 PM -
I am still new to this, so I might sound brainless/ignorant in parts of my description/questions, since I have a lot of gaps in my knowledge, but I will do my best.
The laptop is Lenovo Legion Y540-15IRH, and the motherboard model is NM-C221 Rev 2.0 (Schematics and BoardView can be easily found). To save time I have the exact problem in the laptop as the one shown in this video:
[url]https://www.youtube.com/watch?v=tfucZ_WKpz4[/url]
I was checking the voltages I found that the main power rail V20B+ is good, and same for the +3VALW circut, but when I tried the +5VALW,...Today, 10:52 AM
-
I have an Asus G14 (GA401QM) that has a power issue. Originally the board had a shorted 5V rail and dead EC. I reballed a working EC, soldered it on, and I resolved the 5V issue by replacing the APL6012 and the low side 5V mosfet. Resistances on all power rails are healthy now, but 20V does not make it through the first MOSFET. 20V is present on the drain of the first MOSFET, but there is no voltage on the gate or source.
When diagnosing this issue, I thought that the issue was due to the BQ24800 chip not outputting the correct signals so I soldered on a known working chip and the...Today, 01:30 PM -
Hi friend, I've this notebook HP Gaming 16-a0006nl with QUANTA DAG3JBMB8D0 that won't power on.
I start checking first mosfet and they seems to be ok.
On power button I get 3 that go to 0 on pressing, and come to 3v on release.
After I check charge ic that is BQ738H
I write here measure with battery and ac
19
19
19
25
3
1.9
0
3.1
3.1
1
11
11
11
gnd
0
6
10
11
11
19
I've 0 on pin 7 IOUT and on pin 15 LODRV.
...Today, 07:09 AM -
Hi,
working on a ASUS ROG STRIX GL702VSK 60NB0DZ0-MB1260 that does not power on. At the PQ8900 PIN2 (P_CHG_ACMOS_G_20) I am receiving 24.7V and PIN1 (P_CHG_ACMOS_S_20) 20V, however when I place the PQ8901 P_CHG_ACMOS_G_20 it drops 0V. I don't have the replacement mosfets ( N-MOSFET QM3058M6AC PRPAK5*6
UBIQ) however will any N-channel mosfet with similar parameters work ? I also found that PCI8703, PCI8701 are shorted. any help would be grateful.Yesterday, 04:34 PM -
Hi Community,
I've got the above model that activates the relay (clicks) and powers on the LG logo power light on when turned on. It then almost immediately turns off. I not noticed any image on the screen or heard any sound during this brief period.
Checks show:
3.5v on SMPS on (in off state, no other voltages present incl pwr on)
On pressing power button > the 3.5 pwn on voltage, 12v and 24v lines appear on the SMPS connnector between the main the SMPS but then all drop the zero in 1-2 seconds
Disconnecting 24 to TCON connector and powering on shows...Today, 02:42 PM -
Hey guys looking for the Bios for an Asus ROG G713PV-DS94
Motherboard Number is g713p-mb-VGT 6050A3468901-MB-A01
Serial Number is R3NRKD03613412E
i am not sure if any additonal information is needed if so let me know and i can update this post. Things i have tried are to download the BIOS directly from Asus but that file is a .329 file and is 32MB as opposed to the 16MB file i need. Scoured high and low and cant find this darn BIOS anywhere! Much appreciated!!...Today, 02:29 PM -
I am still new to this, so I might sound brainless/ignorant in parts of my description/questions, since I have a lot of gaps in my knowledge, but I will do my best.
The laptop is Lenovo Legion Y540-15IRH, and the motherboard model is NM-C221 Rev 2.0 (Schematics and BoardView can be easily found). To save time I have the exact problem in the laptop as the one shown in this video:
[url]https://www.youtube.com/watch?v=tfucZ_WKpz4[/url]
I was checking the voltages I found that the main power rail V20B+ is good, and same for the +3VALW circut, but when I tried the +5VALW,...Today, 10:52 AM -
How about everyone, I have a MacBook Air which did not turn on, it had a lot of corrosion on the card where the sound plug and the fingerprint go, I have replaced it and the device now turns on but has no sound, if I connect a headphone through the plug, yes There is sound but the external speakers do not sound....Today, 10:26 AM
-
I have an RTX 2070 Super from evga with a blown up IC. With the IC on the card, pin 17 had a short to ground. This pin is connected to the 5V rail by R993, a 0hm resistor. I removed both U610 and R993, to discover that the 5V rail has 800 Ohms of resistance to ground. After checking some resources online, i found a picture which describes the usual measurements a Turing series GPU should have in order to "work properlly". Interestingly enough, this gpu doesn't have U31, the IC responsible for the creation of the 5V on the card, as well as no L47.
Are these 800 ohms rigth...Today, 03:10 PM -
Hi, I've got bulk of lenovo l480 (joblot), all of them comes with bios password I'm looking for a good and reliable solution as we have loads of them, I do have SVOD 4 with keyboard connector, I haven't dealt with KBC PW yet and in my knowledge that's the case.Today, 02:48 PM
-
Please help sir, this board does not turn on because VSYS_OUT is 9.2v, I compared it with a normal board VSYS_OUT is 10.2v, I have replaced the PQ101 and PQ102 mosfet and BQ 25700 which is known to be good, but the results are still the same, thank you
VSYS_OUT 9.2v
Meter in resistance mode auto range 6M ohm ok
NORMAL BOARD VSYS_OUT 10.2V
PQ101
PIN 2 20V
PIN 7 0.004V
PIN 6 6V
PIN 5678 0V
PQ102
PIN 567 0V
PIN 9 0.004V
PIN 234 9.2V (VSYS_OUT)
PU101 BQ25700ARSNR
1 VBUS 20V...05-06-2024, 10:48 AM