Inductor Motherboard Tester, Detect Inductance & Coil Activity – Diagnose Dead Rails in Seconds!

Admin

Admin

Staff member
Laptop Repair Team
#1
Joined
Nov 2, 2017
Messages
8,969
Likes
1,136
Points
4,577
Age
40
Location
Tbilisi
Website
alexlaptoprepair.com
#1

Inductor Handheld EMF Pulse Inductor Tester for Laptop Motherboard Repair
This compact diagnostic tool is designed to detect high-frequency electromagnetic pulses emitted by PWM coils on laptop motherboards. It allows technicians to quickly identify switching activity in critical power rails—such as CPU, GPU,POWER SYSTEM or charging circuits, without the need for pulse trigger test with oscilloscope.

Simply place the tester near a motherboard inductor; if switching pulses are present, the onboard Green LED will turn on. This makes it an essential tool for diagnosing issues like dead CPU rails, shorted VRMs, or missing gate drive signals during board-level repair.


Detect Missing Switching on Key Power Rails
Identify inactive S5, S0, VCORE, or VCCGT rails with ease.
Pinpoint Faulty Components
Helps locate issues such as open coils, circuit bad MOSFET drivers, or failing PWM controllers.
High-Frequency EMF Detection
Sensitive to switching frequencies from 100 kHz up to several MHz.
Instant Visual Feedback
LED indicator on when switching pulses are detected.


Specs:
Power: CR2032 coin cell ( not included )
Indicator: Red LED for for POWER & Green LED for pulse detection
Trigger range: 100 kHz – 5 MHz
Size: Compact and fits any technician’s toolkit
LINK OF THE PRODUCT
 
You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
Admin Repair Tool DDR5 LAPTOP TESTER FOR Motherboard Detect the CPU Short or Open And Slot tester with Light Detection Laptop Repair & Bios Tools 0
O Motherboard repair. Laptop Repair & Bios Tools 0
N HP ENVY Laptop 17-cg1008ca Motherboard GPT70 LA-J504P Schematic , Boardview 0
W How to open a motherboard .cad file ? Laptop Repair & Bios Tools 2
A motherboard M4HM87P Rev 1.0 unknown ic Laptop Repair & Bios Tools 0
D Schematic and BoardView for motherboard QUANTA XW3 DA0XW3MBAG0 REV G (laptop HP ZBook 17 G5 Mobile Workstation) Schematic , Boardview 0
Admin A2179 Motherboard 820-01958 X1783 j230 schematic+Location map Schematic , Boardview 0
L CG70A motherboard Schematic , Boardview 2
Admin Vertyanov Successor Programmer Motherboard Profiles - MEC settings List Laptop Repair & Bios Tools 4
Admin Vertyanov Successor Programmer Motherboard Profiles - MB connection NUVOTON List Laptop Repair & Bios Tools 4
Similar threads
Repair Tool DDR5 LAPTOP TESTER FOR Motherboard Detect the CPU Short or Open And Slot tester with Light Detection
Motherboard repair.
HP ENVY Laptop 17-cg1008ca Motherboard GPT70 LA-J504P
How to open a motherboard .cad file ?
motherboard M4HM87P Rev 1.0 unknown ic
Schematic and BoardView for motherboard QUANTA XW3 DA0XW3MBAG0 REV G (laptop HP ZBook 17 G5 Mobile Workstation)
A2179 Motherboard 820-01958 X1783 j230 schematic+Location map
CG70A motherboard
Vertyanov Successor Programmer Motherboard Profiles - MEC settings List
Vertyanov Successor Programmer Motherboard Profiles - MB connection NUVOTON List

Laptop repair Latest videos

Latest threads

Laptop Charging but Not Increasing Battery % – What to Check?

If a laptop indicates charging while the amperage keeps on changing, several issues can arise. Hardware faults can be an issue, or any irregular power setting could be the problem; it could even be an old battery. Here's what you can check:

Checklist:

Try a Different Charger – The adapter or cable you have might be faulty.

Check the Charging Port – Loose chips or scratched ports halt charging.

Check Battery Health – Old or faulty batteries cannot retain charges.

Avoid Overheating – Heat is a charging pause on the safety.

Reset Power Settings / BIOS – Occasionally, settings or an outdated BIOS create random charging issues.

Calibrate Battery – Discharge fully, then charge to 100% without interruption.

If none of these steps work, it's best to visit a laptop repair Sharjah service center for a professional diagnosis.

Inductor Motherboard Tester, Detect Inductance & Coil Activity – Diagnose Dead Rails in Seconds!


Inductor Handheld EMF Pulse Inductor Tester for Laptop Motherboard Repair
This compact diagnostic tool is designed to detect high-frequency electromagnetic pulses emitted by PWM coils on laptop motherboards. It allows technicians to quickly identify switching activity in critical power rails—such as CPU, GPU,POWER SYSTEM or charging circuits, without the need for pulse trigger test with oscilloscope.

Simply place the tester near a motherboard inductor; if switching pulses are present, the onboard Green LED will turn on. This makes it an essential tool for diagnosing issues like dead CPU rails, shorted VRMs, or missing gate drive signals during board-level repair.


Detect Missing Switching on Key Power Rails
Identify inactive S5, S0, VCORE, or VCCGT rails with ease.
Pinpoint Faulty Components
Helps locate issues such as open coils, circuit bad MOSFET drivers, or failing PWM controllers.
High-Frequency EMF Detection
Sensitive to switching frequencies from 100 kHz up to several MHz.
Instant Visual Feedback
LED indicator on when switching pulses are detected.


Specs:
Power: CR2032 coin cell ( not included )
Indicator: Red LED for for POWER & Green LED for pulse detection
Trigger range: 100 kHz – 5 MHz
Size: Compact and fits any technician’s toolkit
LINK OF THE PRODUCT

DDR5 LAPTOP TESTER FOR Motherboard Detect the CPU Short or Open And Slot tester with Light Detection

DDR5 Laptop Motherboard Tester
Quickly detects CPU shorts, open lines, and DDR5 slot faults.
LED indicators show fault status—off for open line, extra bright for short.
Test points like BULK,ALERT,HSA,RESET, HSDA, HSCL،POWER GOOD can be measured online.
Pin reference guide on the back for easy troubleshooting.


DDR5 Laptop Motherboard Tester – Detects CPU Short or Open Circuit & Slot Status via Light Indicator
How It Works:
Open Line (No Connection): The LED remains off, indicating a possible fault in the DDR5 slot or the CPU—this may also suggest the CPU requires reballing.
Short Circuit Line : The LED will glow brighter than the others, signaling a short in the slot or CPU area.
Important Test Points:
For advanced diagnostics, you can remove the tester’s battery (cr2032) and power on the laptop to measure key signals directly from the test points, including:
  • BULK
  • HSDA
  • HSCL
  • HSA
  • RESET
  • ALERT
  • POWER GOOD
These points help in verifying the integrity of DDR5 Power lines and communication between the CPU and memory slot.
Easily Detect CPU Reset Signal:
The tester allows for quick and easy detection of the reset signal coming from the CPU, helping you verify whether the processor is initializing properly.
LED Indicator Pin Reference:
If any LED shows abnormal behavior, you can identify the corresponding pin number by checking the label on the back of the tester. This allows for easier troubleshooting of specific signal lines or faults.
LINK OF THE TOOL

Clear BIOS Asus Rog G531GU

Hello! Hi, I dumped my password protected BIOS. I flashed a new BIOS from this site (https://www.alexlaptoprepair.com/forums/threads/asus-rog-g531gu-g531gw-1-6-bios-dump.3918/), and everything works fine. I don't see the Mac address and PC serial number available on the BIOS screen. I have these details, but I don't know how to enter them into the new BIOS. I'm attaching the original dump and the clean BIOS from this site.

I kindly ask if it is possible to remove the password from the original BIOS or update the clean BIOS with the PC serial number and the Mac address.
thank you !!

MEC jTAG ADAPTER SUPPORT MULTI HEADER FOR DIFFERENT PROGRAMMER SUCCESSOR,SVOD,RT809XX,ETC

The MEC JTAG Adapter is designed to save you time by allowing easy and fast access to MEC KBC I/O. It supports multiple headers and is compatible with SUCCESSOR, SVOD,RT809XX and UNIVERSAL programmers.


mec1663,mec5085,mec5075,mec1609,mec1619,mec1618,mec1633,mec5085,mec55,mec5045,mec5035,mec1663,mec1650
MEC JTAG Adapter
The MEC JTAG Adapter is built to streamline your work with MEC KBC I/O like , providing quick and convenient access while saving valuable time. It supports multiple header types and is fully compatible with programmers such as SUCCESSOR, SVOD, RT809XX, and more.
This adapter includes all the essential JTAG pins—TMS, TDI, TCLK, RST, GND, and 3.3V—allowing you to power the latest MEC chips directly from your programmer, eliminating the need to connect an external power adapter to the motherboard.
It also features breakout points connected to some resistors places allow you to pull-up or pull-down for key signals like MSDATA, nFWP, and RESET, which are useful in scenarios where enabling or disabling write protection or other features is necessary. These breakouts make it easy to adapt the configuration depending on your specific use case.
The MEC JTAG Adapter comes complete with the required headers for soldering (based on your programmer), a connector, and JTAG wires.


USB-C Line Tracer and Tail Plug Detector – Laptop Dock Tester Tool



This compact USB‑C tester plugs directly into a port to probe every signal line, using the internal ESD protection diodes of connected TYPE-C ICs OR PD CONTROLLER. You can directly check the USB-C Port and all lines connecting to the Type-C chip directly or PD chip , and also know what protocol is activated on this input.
The tester can check all these pins

Power & Configuration
CC1, CC2 (A5, B5): Configuration Channel – determines plug orientation, establishes host/device role, negotiates power level, and signals alternate modes.
Data PINS
D+, D- (A6, A7, B6, B7): USB 2.0 differential pairs – always connected regardless of plug orientation.
TX/RX pairs (A2/A3/A10/A11 and B2/B3/B10/B11): SuperSpeed signals for:
USB 3.1 Gen 1/2
Thunderbolt 3/4
DisplayPort (via Alt Mode)
These lines are flipped depending on plug orientation.
Sideband / Auxiliary
SBU1, SBU2 (A8, B8):
DisplayPort Alt Mode (AUX channel)
Analog audio (e.g., headphone dongles)
USB Debug Accessory Mode (UART)


No HS, SBU, or CC → No CC negotiation; no PD connection .
HS detected, SBU absent → Likely USB‑3.x only.
HS & SBU detected → Indicates support for DP/Thunderbolt or USB‑3.x with SBU-based features.
SBU only → Debug or audio path present, but no USB‑3.x.


USB-C Line Tracer and Tail Plug Detector – Laptop Dock Tester Tool

MPS PMBUS PASSWORD PROTECTION

MPS PMBUS PASSWORD PROTECTION
1000068222.jpg
Do processor circuit ICs (VRM) really have passwords?
Do you remember the video where I explained how to program modern processor circuit ICs using a PMBUS programmer? I mentioned at the time that in some cases, we would need the schematic, because even though there are many dump files available now, for some models it’s not possible to backup the file from another board because the ic is protected.

This is because some modern processor VRM ICs support a feature called PMBUS Protect. This feature allows the manufacturer to set a password to protect the IC. It provides three levels of protection:
  1. Protection from reading the registers
  2. Protection from writing to the registers
  3. Protection from both reading and writing to the registers
For the first and third types, it's not possible to take a backup from the IC—even if you have a working board with the same model. In this case, you’ll need the schematic to manually build a configuration that suits the processor circuit and its components.

As for the second type, you can still take a backup and write it to a new or used VRM IC later without any issues.

Are there any ways to break this protection? No.

Are there any workarounds to bypass it? No.

FDX40 LA_J261P Boardview

Hi
I need your help.
I'm looking boardview for the FDX40 LA_J261P
Thank you so much.

ThinkPad E480 NM-B421 RTS5455 Type-c chip firmware dump

ThinkPad E480
NM-B421
RTS5455 Type-c chip firmware dump

Asus Q530VJ K6502V/K6602V_MB RTS5452H Firmware

Asus Q530VJ
K6502V/K6602V_MB
NB6510A_RPL_PCB_MB_V4 R2.0
RTS5452H Type-c chip Firmware

Aokzoe A1 Pro R7 7840U AR07_MB_V03 MP2845A 4+1+1 Configuration file for MPS CHIP

Aokzoe A1 Pro R7 7840U
AR07_MB_V03
MP2845A 4+1+1
Configuration file for MPS CHIP

Aokzoe A1 Pro R7 7840U, AR07_MB_V03 RTS5452H Firmware dump

Aokzoe A1 Pro R7 7840U
AR07_MB_V03
RTS5452H Firmware
Both RTS Chip 0x66,0x69

Lenovo Legion 5 NM-D601 RTS5457V Firmware backup

Lenovo Legion 5
NM-D601
RTS5457V
Two pd chip Firmware backup

Bios DA0P5HMB8I0 REV I

hello i need bios for DA0P5HMB8I0 REV WhatsApp Image 2025-04-04 at 13.11.53.jpeg I can u help?

Asus Rog G513QR

hello i have an asus rog g513qr ryzen 7 series 5000 that initial not powering on the cpu was damaged , after changing the CPU, bios was corupted and i write another, after we have image on display and windows i attached picture ,bios is damaged with bad serial u have picture (the ic grafic is nvidia 3070) do you think the grafic card fault is from bios or i have to solder the ic or replace the GPU IC?
Top