Dell 15-3537 VBW00 LA-9981P SUSB# problem - Badcaps

New Members (required) Introduce yourself here. Read the Forum rules here.

X

menshawy

Badcaps Veteran

Join Date: Aug 2013

Posts: 397

Country: egypt
#1

Dell 15-3537 VBW00 LA-9981P SUSB# problem

08-02-2021, 08:31 AM

hi
i have a problem with Dell 15-3537
MB VBW00 LA-9981P
CPU SR170 -Intel Core i5-4200U
MB power on OK but not display and fan is not spins
3valwp,5valwp OK
rsmrst OK
3VALW_PCH OK
all VS volts is absent
SIO_SLP_S3 and SIO_SLP_S4 is not shorted with GND
u2301 pins 3,5 SUSB# signal is 0v
i was programed EC and main BIOS ,change YC1 ,Q8 with no success
what is SIO and PCH requirements to Generate SUSB#
I am thinking about reballing cpu but I want to be sure before that
need help
thanks

Attached Files

Dell=1=Compal_LA-9981P_Rev 0.2_Schematic.pdf (1.80 MB, 104 views)
Tags: None
mido23

Member

Join Date: Feb 2018

Posts: 13

Country: paris
#2

11-15-2022, 03:38 PM

Re: Dell 15-3537 VBW00 LA-9981P SUSB# problem

Hello, check the SYSON signal
if it is 0V
Mostly SIO is a problem
Comment
Techtiger

Badcaps Legend

Join Date: Oct 2014

Posts: 1601

Country: france
#3

11-15-2022, 04:30 PM

Re: Dell 15-3537 VBW00 LA-9981P SUSB# problem

What is the resistance on pin 116 SIO SUSP# ( this platform doesn’t have SUSB#)
Comment
Techtiger

Badcaps Legend

Join Date: Oct 2014

Posts: 1601

Country: france
#4

11-15-2022, 04:41 PM

Re: Dell 15-3537 VBW00 LA-9981P SUSB# problem

Make sure RTC VCC is clear & PCH_RTCRST# voltage?
Comment
mcplslg123

Badcaps Legend

Join Date: Jun 2015

Posts: 7262

Country: india
#5

11-15-2022, 11:10 PM

Re: Dell 15-3537 VBW00 LA-9981P SUSB# problem

The post is dated feb'21
Comment
mido23

Member

Join Date: Feb 2018

Posts: 13

Country: paris
#6

11-20-2022, 02:19 PM

Re: Dell 15-3537 VBW00 LA-9981P SUSB# problem

Hello my friends
Well done brother techtiger
should be measured rtc vcc before checking SIO SUSP#
Comment

Previous template Next

(NEED HELP)dell precision m4600 problem after bios flash (unbrick)

by toti24

dell precision m4600 laptop
i7 2760qm
8gb ram 750gb HDD
intel hd 3000 integraded and nvidia quadro 2000m

pleasea bear with me english isnt my language and ill try to be as clear as possible
note i live in mexico in a very small town..
thank you.

laptop got bricked (freeze at dell logo) i managed to unbrick it but now am facing a problem...... let me explain what and how it happened.

the brick happened when i was installing win 10 using usb.
used rufus and officia microsoft.iso
it finished copying files from usb...
- Channel: BIOS Requests ONLY!
03-06-2022, 08:39 PM
Dell 15R-5521 keyboard problem (KBC?)

by SDNarcia

Hello, I have a Dell 15R-5521, with the problem that the Ctrl, Alt, Shitf and Num Lock keys do not work, I tested the keyboard with a keyboard tester and it is functional, I also got another new keyboard and the computer has the same problem with the same keys. Check continuity between the ZIF connector from the keyboard to the KBC and all pins are correct. I cleaned the ZIF connector and the KBC and I still have the same problem. I reinstalled windows just in case, and it didn't work. I updated the BIOS to the latest version A16 and there were no changes.

As additional information,...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
07-20-2024, 10:47 PM
Dell N5110 problem

by Achille15

Hello everyone,
so, I have this laptop Dell Inspiron N5110 with a heating problem on both CPU (I7-2680qm) and GPU (GT 525m), I tried many solutions, like changing thermal paste every month, using thermal pads on CPU and GPU, even using thermal pads on CPU nearby coils; but nothing worked, just minutes after booting the laptop shuts itself down so I thought it might be a short problem, so I decided to check what's going on, so I went online and some tutorial (general one) said to check inductors in order to find the shorted circuit, after checking (CPU removed), I found the culprit to be...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
03-29-2025, 04:41 PM
Dell latitude e7470 not turn on .power buton on off and Run Power problem

by masoksian

Hi everyone,

I am dealing with the problem of turning on and off my Dell e7470 notebook.

The battery charge light is solid white, I press the button, the power indicator and the light on the button are solid for 1-2 seconds and immediately turn off.

The system does not turn on, there is no post.

I removed the RAMs and changed them, changed the battery, RTC battery, AC adapter, removed them and waited, tried again, it does not turn on.
The problem continues in the same way.
I tried to turn on the Fn key, nothing came to the screen....
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
02-15-2025, 12:08 PM
Dell 7480 problem with freezing during the Windows loading process

by MahmoudNasser

Hello everyone, I wish you a happy day.

I have a Dell Latitude 7480 laptop that has a problem with freezing during the Windows loading process. If it manages to boot up, it becomes very slow and doesn't load anything from the desktop.

Device Data
Model Dell Latitude 7480
CPU:i7-7600U
SN:7T58PL2
MP PartNumper:CAZ20 LA-E131P Rev:1.0 A00
Bios Chips:W25Q128BV

The attempts that have been made to solve the problem have not yielded any results.

1. Changing the M.2 and M.2 Nvme hard drives.
2. Trying...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
07-09-2023, 05:04 AM
Loading...
No more items.

Working...