Mobile and Computer Repairing Course

Lesson 1 • Electronic Components Overview

Identifies resistors, capacitors, inductors, diodes, and transistors by appearance and function. Connects component behavior to real faults found in mobile and computer boards.

Lesson 2 • Essential Tools and Their Uses

Introduces hand tools, power supplies, and basic test equipment used daily in repair work. Students select and use the correct tool for each repair scenario.

Lesson 3 • Workshop Safety and ESD Protection

Establishes electrical safety rules, ESD precautions, and proper handling of hazardous materials. Prevents equipment damage and personal injury throughout all lab sessions.

Lesson 4 • Basic Electrical Concepts

Covers voltage, current, resistance, and Ohm's Law as applied to repair work. Establishes the quantitative foundation every subsequent diagnostic task depends on.

Lesson 1 • Multimeter Mastery

Covers voltage, current, resistance, continuity, and diode-mode measurements. Directly supports fault isolation on both mobile and computer circuits.

Lesson 2 • Oscilloscope Fundamentals

Teaches probe setup, time-base adjustment, and waveform interpretation for digital and analog signals. Enables diagnosis of clock, power, and data-line faults.

Lesson 3 • Specialized Repair Test Tools

Introduces USB testers, battery analyzers, LCD testers, and signal injectors specific to device repair. Expands diagnostic capability beyond general-purpose instruments.

Lesson 1 • SMD Component Rework

Teaches hot-air station use for removing and replacing 0402, QFP, and QFN packages. Connects SMD skills to real component replacements on phone and laptop boards.

Lesson 2 • Microscope-Assisted Microsoldering

Introduces stereo microscope setup and microsoldering techniques for jumper wires and pad repair. Addresses ultra-fine-pitch work found on modern smartphone logic boards.

Lesson 3 • BGA Reballing and Replacement

Covers BGA removal, pad cleaning, stencil reballing, and controlled reflow for CPU and RAM chips. Enables repair of the most common board-level failures in modern devices.

Lesson 4 • Hand Soldering Fundamentals

Covers iron temperature, tip selection, flux use, and joint formation on through-hole and leaded SMD parts. Builds muscle memory before advancing to fine-pitch work.

Lesson 1 • Mobile Device Architecture

Maps the SoC, PMIC, RAM, NAND, RF, and charging ICs on a typical smartphone board. Provides the mental model needed to trace faults to specific subsystems.

Lesson 2 • Safe Disassembly and Reassembly

Covers adhesive removal, flex-cable handling, and torque-correct fastening for major phone brands. Prevents cosmetic and structural damage during every repair.

Lesson 3 • Display and Touch System Repair

Teaches LCD and OLED replacement, digitizer bonding, and backlight circuit diagnosis. Resolves the most frequently reported customer complaints on mobile devices.

Lesson 4 • Battery and Charging System Repair

Covers battery health assessment, safe replacement, and diagnosis of charging port and PMIC faults. Addresses the second most common category of mobile repair jobs.

Lesson 1 • Firmware Flashing and Restoration

Covers stock firmware flashing via manufacturer tools, EDL mode, and DFU restore. Resolves boot failures and software corruption without hardware intervention.

Lesson 2 • Mobile Data Recovery

Uses software tools and JTAG or ISP methods to recover data from damaged or locked devices. Provides a high-value service that differentiates professional repair shops.

Lesson 3 • Mobile Operating System Fundamentals

Explains bootloader, kernel, recovery partition, and file-system structure for Android and iOS. Provides the conceptual map needed before any software intervention.

Lesson 4 • IMEI, Baseband, and Network Repair

Addresses IMEI corruption, baseband IC faults, and network unlock procedures within legal boundaries. Restores cellular connectivity for devices with no-service errors.

Lesson 1 • Motherboard and CPU Repair

Covers capacitor replacement, VRM diagnosis, CPU socket pin repair, and thermal paste application. Addresses the most complex and high-value desktop and laptop repairs.

Lesson 2 • RAM, Storage, and GPU Repair

Diagnoses and resolves RAM slot faults, SSD controller failures, and GPU reflow or replacement. Covers the components most frequently responsible for no-boot and data-loss complaints.

Lesson 3 • POST, BIOS, and Boot Diagnostics

Interprets POST beep codes, BIOS error messages, and boot-sequence failures to isolate faulty components. Connects firmware-level symptoms to specific hardware faults.

Lesson 4 • PC Architecture and Component Roles

Maps CPU, chipset, RAM, storage, GPU, and PSU interactions on desktop and laptop platforms. Establishes the system-level view required for accurate fault isolation.

Lesson 1 • Operating System Installation and Configuration

Covers clean installation, partition setup, driver installation, and activation for major desktop OSes. Provides the baseline skill for all subsequent software repair tasks.

Lesson 2 • Diagnosing Crashes and Blue Screens

Interprets stop codes, minidump files, and event logs to identify the root cause of system crashes. Connects software symptoms to hardware or driver faults for accurate repair.

Lesson 3 • Malware Removal and System Hardening

Applies offline scanning, rootkit removal, and browser cleanup to eliminate malware infections. Implements hardening measures to prevent reinfection after repair.

Lesson 4 • Data Backup and Recovery

Uses imaging tools, file-recovery software, and cloud backup to protect and restore customer data. Ensures no data loss occurs during OS repair or drive replacement.

Lesson 1 • Clock, Reset, and Communication Bus Faults

Diagnoses missing clock signals, stuck reset lines, and I2C, SPI, and UART bus failures with an oscilloscope. Addresses faults that cause no-boot or partial-function symptoms.

Lesson 2 • Short-Circuit Isolation Techniques

Applies thermal camera, freeze spray, and current injection to locate shorted components on a board. Reduces repair time by pinpointing faults without destructive probing.

Lesson 3 • Schematic-Driven Fault Isolation

Uses circuit schematics and board-view software to trace power rails and signal paths to fault locations. Transforms guesswork into a structured, repeatable diagnostic process.

Lesson 4 • Power Rail and PMIC Diagnostics

Measures enable signals, feedback voltages, and output rails to isolate PMIC and regulator faults. Resolves no-power and short-circuit conditions on mobile and laptop boards.