Laptop and Smartphone Chip Level Repair

Overview
Curriculum
Instructor

Computers, like everything else, wear out over time. While unfortunate and costly, it can be turned into
an opportunity for someone that knows computers and networking well enough to repair them and rescue
people’s information and media.

Curriculum

21 Sections
118 Lessons
25 Days

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The Introduction of Laptop Repair
0
Original & OEM Laptop Mainboard Part Numbers
4
- 2.0
  The Level of Laptop Computer Maintenance/Repair
- 2.1
  The Basic Knowledge You Must Know Before Starting to Repair Laptop
- 2.2
  The Clock Signal
- 2.3
  Reset Signal
The Architecture of The Laptop Mainboard
5
- 3.0
  The Architecture of Intel Double Bridges (GM/PM45 and below)
- 3.1
  The Architecture of Intel Single Bridge (above HM55)
- 3.2
  The Architecture of AMD Double Bridges (RS780)
- 3.3
  The Architecture of AMD Single Bridge (A70)
- 3.4
  The Architecture of nVIDIA Double Bridges (C51M)
The Explanation of Nouns and Common Concepts of Laptop Maintenance
5
- 4.0
  Power Supply and Signal
- 4.1
  High Level and Low Level
- 4.2
  Jump and Pulse
- 4.3
  Power Good/Reset/Clock/Jump/
- 4.4
  All 5 Signals(Power Good/Reset/Clock/Jump/Select/Open)
The Basic Application Circuit of Electronic Components
8
- 5.0
  Capacitor
- 5.1
  Resistance
- 5.2
  Diode
- 5.3
  Transistor
- 5.4
  Field-Effect Tube (MOSFET)
- 5.5
  Gate Circuit
- 5.6
  Comparator
- 5.7
  Converter
The Use of the Circuit Diagram and the Point Bitmap (BoardView)
2
- 6.0
  Circuit Diagram
- 6.1
  Common Point Bitmap (BoardView Software)
The Basic Working Process of Laptop Computer
10
- 7.0
  The general process of Laptop computer
- 7.1
  Hard Starting Process and Intel Chipset Standard Timing.
- 7.2
  The Soft Start Process.
- 7.3
  About ACPI Specification
- 7.4
  ACPI Summarize
- 7.5
  G (Global) State of ACPI.
- 7.6
  D (Device) State of ACPI.
- 7.7
  S (Sleeping) State of ACPI
- 7.8
  C State of ACPI
- 7.9
  The Power and The Control Signal of ACPI
The Explanation of PWM Circuit
17
- 8.0
  PWM Circuit
- 8.1
  PWM Working Principle
- 8.2
  Common English Abbreviation in PWM Circuit
- 8.3
  The Boot-Strap Circuit
- 8.4
  Output Voltage Regulation Circuit
- 8.5
  The Voltage Detection Circuit
- 8.6
  The Current Detection Circuit
- 8.7
  The Working Mode
- 8.8
  Analysis of The Standby Power Chip
- 8.9
  Analysis of MAX8734A
- 8.10
  Analysis of TPS51125
- 8.11
  Analysis of the Bridge/BUS Power Supply Chip
- 8.12
  Analysis of The Single PWM Controller RT8209.
- 8.13
  Analysis of The Dual PWM Controller TPS51124.
- 8.14
  Analysis of CPU Core Power Supply
- 8.15
  Analysis of Commonly Used Chip ISL95831 by HM65 Mainboard
- 8.16
  Analysis of Commonly Used Chip ISL6265 by AMD Platform
Analysis of Quanta OEM Laptop Mainboard Circuit
5
- 9.0
  Quanta CT6 RTC Circuit
- 9.1
  CT6 Protective Isolation Circuit
- 9.2
  CT6 Power-On Sequence Circuit
- 9.3
  ZQ5 (Acer as4733z) Protective Isolation Circuit
- 9.4
  AX1 Protective Isolation Circuit
Analysis of Wistron OEM Laptop Mainboard Circuit
2
- 10.0
  HBU16-1.2 Protective Isolation Circuit
- 10.1
  HBU16-1.2 Standby Circuit
Analysis of Compal OEM Laptop Mainboard Circuit
3
- 11.0
  LA-5891P Protective Isolation and The Standby Circuit
- 11.1
  LA-6631P Protective Isolation Circuit
- 11.2
  LA-6751P Protective Isolation Circuit.
Analysis of Inventec OEM Laptop Mainboard Circuit
5
- 12.0
  DosXX Dunkel 1.0 Protective Isolation Circuit
- 12.1
  DosXX Dunkel 1.0 Standby Circuit
- 12.2
  Feature Circuit
- 12.3
  OCP Circuit
- 12.4
  Big OR GATE Circuit
Analysis of INTEL PCH Power on Sequence (i3/i5/i7)
3
- 13.0
  ME and Intel AMT.
- 13.1
  Intel HM55 Series Chipset Timing Sequence
- 13.2
  Chipset Timing Sequence Above Intel HM65 Series
Analysis of ASUS K42JR (HM5x) Timing Sequence
4
- 14.0
  The Standby State
- 14.1
  Trigger
- 14.2
  The Boot State
- 14.3
  Clock, PG and Reset
Analysis of Apple A1286 (HM5x) Timing Sequence
5
- 15.0
  G3 State
- 15.1
  RTC Circuit
- 15.2
  S5 State
- 15.3
  S3 and S0 State
- 15.4
  The Clock, PG and The Reset
Analysis of DELL N4110 (HM6x) Timing Sequence
6
- 16.0
  The Standby and The Memory Power Supply of The Bridge.
- 16.1
  S0 state
- 16.2
  PG and The Clock
- 16.3
  CPU Core Power Supply
- 16.4
  Reset
- 16.5
  The Graphic Card Power Supply
Analysis of ThinkPad (IBM) T410 Timing Sequence
3
- 17.0
  AMT
- 17.1
  The Clock, PG and Reset
- 17.2
  The Battery Charge Circuit
Analysis of AMD Platform Timing Sequence
9
- 18.0
  The Standard Timing Sequence of nVIDIA
- 18.1
  The Explanation of nVIDIA Chipset Timing Sequence (MSI MS16352)
- 18.2
  The Standard Timing Sequence of AMD Chipset
- 18.3
  The Timing Sequence of AMD Chipset (ACER 4235, Quanta ZQE)
- 18.4
  The Explanation of AMD A70M (Lenovo G485, Compal LA-8681P).
- 18.5
  RTC Circuit
- 18.6
  Protective Isolation Circuit
- 18.7
  Clock, PG and Reset
- 18.8
  The Independent Graphics Working Timing Sequence
Analysis of the Laptop Battery Charging Circuit
6
- 19.0
  Analysis of Charging Chip MAX1772 Used Usually Under Intel 1965GM Platform
- 19.1
  The Name and The Definition of The Pin
- 19.2
  Application Circuit.
- 19.3
  Analysis of The Charging Chip ISL88731 Used Usually by The Intel GM45
- 19.4
  The Name and The Pin Definition of ISL88731
- 19.5
  The Typical Application Diagram
Maintenance of Common Failures
12
- 20.0
  Short Trouble (Short Circuit Problem)
- 20.1
  Do Not Trigger Fault
- 20.2
  Power Down Fault
- 20.3
  Not Running Fault (NO Error Code)
- 20.4
  The Maintenance of Common Code
- 20.5
  The Screen Shows Fault
- 20.6
  The Sound Card Fault
- 20.7
  USB Fault
- 20.8
  The Network Card Fault
- 20.9
  SATA Interface Fault
- 20.10
  The Fan Interface Fault
- 20.11
  Crash Fault
Example of Maintenance (Laptop Repair Cases)
4
- 21.0
  The example of maintenance about don’t boot fault
- 21.1
  The example of the breakdown maintenance about not bright
- 21.2
  The fault maintenance examples of power down
- 21.3
  The maintenance examples of other faults

Zenzele Liberty Mbatha (Prof)

2 Comments

MUSA PHIRI says:

November 7, 2025 at 6:58 am

Good morning. I’m interested in taking the chip level repair course. What are the entery requirements?. Also is it an online course or will I be learning practically in class?

Reply
- Zenzele Liberty Mbatha (Prof) says:
  
  November 17, 2025 at 7:27 pm
  
  Hi Musa ,
  
  The course is hybrid theory is Online and practicals are face to face
  
  Reply

Laptop and Smartphone Chip Level Repair

Laptop and Smartphone Chip Level Repair

Curriculum

Zenzele Liberty Mbatha (Prof)

2 Comments

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