Part1: How to use a Multimeter on Laptop Motherboard.

-

 Requirements 

A Multimeter, laptop charger, laptop motherboard.

  

In this part one we are going to test the laptop charger using the multimeter, were are going to learn how to check if a charger is good.


Step 1: Verify the meter works

Your probes are plugged in correctly:
Black probe → COM
Red probe → VΩmA


Step 2:
Now turn the dial to:
20V DC (the left side marked V⎓ 20V)
The screen should show something like 0.00 or 1.


Step 3: Measure the charger
The charger must be plugged into the wall and powered on while you measure its voltage.
 
Your HP barrel plug likely has:

Outer metal barrel = negative (ground)
Inner metal sleeve = positive (~19V)
Tiny center pin = identification pin (don't worry about it yet)

Touch:
Black probe to the OUTSIDE metal barrel.
Red probe to the INSIDE metal sleeve (not the tiny center pin).

Be careful not to short them together.

Expected result

A healthy HP charger should read approximately:
18V to 20V → charger is good.
0V → charger or cable is faulty.
Much lower than 18V → charger problem.

Comments

Post a Comment

Popular posts from this blog

Level 1 : WIFI password hacking tutorial(for dummies)

-
Image
  How to See a Saved Wi-Fi Password on Windows Using CMD Have you ever connected your Windows computer to a Wi-Fi network, only to forget the password later? If the computer is still connected to that Wi-Fi network—or has the network password saved—you may be able to view the saved password using Command Prompt (CMD) . You don't need to install any additional software. Windows already has a built-in networking tool called netsh that can be used for this. Important: Only use this method on a computer and Wi-Fi network that you own or are authorized to manage. What You Need You only need: A Windows computer A saved Wi-Fi profile Command Prompt A few simple commands No third-party software is required. Step 1: Open Command Prompt First, open Command Prompt. Method 1 Press: Windows + R A small Run window will appear. Type: cmd Then press Enter . Method 2 You can also open the Start menu and search for: Command Prompt Then open it. You should see a black window similar to a terminal. ...
Read more

How to Bypass computer LOGIN password

-
Image
The following pdf (Backdoor Access) contains step by step guide on how to remove the windows login screen password, this information should be used for ethical purposes and through the owners permission. Bypassing the log in screen  //   to  open pdf  click 👉   Backdoor Access
Read more

WINDOWS HEALTH CHECK TOOLKIT

-
Image
  download the TOOLKIT HERE 👉  WINDOWS HEALTH CHECK TOOLKIT v2 If your Windows PC has ever felt slow, unstable, or full of mysterious errors , you’re not alone. Over time, Windows collects temporary files, corrupted cache, broken updates, DNS issues, driver problems, and background processes that silently reduce performance. That’s exactly why I built the Windows Health Check Toolkit v2 — a simple menu-driven maintenance script that brings together the most important Windows repair and optimization tools into one place , so you don’t have to remember dozens of commands. What this script actually does (and why it matters) This toolkit combines powerful built-in Windows utilities like: System File Checker (SFC) to repair corrupted system files Check Disk (CHKDSK) to fix hard drive errors Deployment Image Servicing and Management (DISM) to repair the Windows image Windows Defender for security scanning Network repair commands to fix internet and DNS issues System cleanup tools ...
Read more