Electronics Repair Course

Lesson 1 • Electronic Components Overview

Introduces passive and active components found in consumer and industrial electronics. Connects component function to circuit behavior students will diagnose later.

Lesson 2 • Core Electrical Concepts

Covers voltage, current, resistance, and power relationships. Establishes the theoretical base required for all diagnostic and repair work ahead.

Lesson 3 • Workshop Safety and ESD Protection

Establishes electrical safety rules, personal protective equipment use, and ESD prevention protocols. Safe habits introduced here apply throughout every subsequent repair task.

Lesson 1 • Power Supplies and Signal Generators

Introduces bench power supplies and function generators as active diagnostic tools. Students simulate operating conditions to isolate faults without full system power.

Lesson 2 • Component-Level Testing Methods

Covers in-circuit and out-of-circuit testing of individual components. Connects measurement results to component pass/fail decisions before desoldering.

Lesson 3 • Digital Multimeter Mastery

Covers all multimeter functions including continuity, diode test, and capacitance. Accurate measurement technique is the single most critical repair skill.

Lesson 1 • Soldering Iron Selection and Setup

Covers iron types, tip selection, temperature control, and maintenance. Proper setup prevents pad damage and cold joints in all subsequent repair work.

Lesson 2 • Surface-Mount Soldering Techniques

Introduces SMD soldering with iron, hot air, and solder paste. Builds the fine-motor and thermal control skills needed for modern PCB repair.

Lesson 3 • Through-Hole Soldering Skills

Teaches correct technique for soldering axial, radial, and connector components. Students practice joint formation to meet industry visual inspection standards.

Lesson 4 • Flux, Solder Alloys, and Cleaning

Explains solder alloy properties, flux chemistry, and post-solder cleaning methods. Correct material selection directly affects joint reliability and corrosion resistance.

Lesson 1 • Systematic Troubleshooting Frameworks

Introduces divide-and-conquer, signal injection, and symptom-based diagnostic models. A structured approach prevents random part replacement and wasted repair time.

Lesson 2 • Documentation and Repair Records

Establishes habits for recording symptoms, measurements, and repair actions. Accurate records support warranty tracking, repeat-fault analysis, and technician accountability.

Lesson 3 • Voltage and Signal Path Analysis

Teaches voltage rail verification and signal tracing from input to output. Students map expected vs. actual values to pinpoint the failing stage.

Lesson 4 • Visual and Sensory Inspection

Covers inspection techniques using eyes, nose, and touch before powering a device. Early visual findings often reveal root causes without any instrument use.

Lesson 1 • Linear Power Supply Circuits

Covers transformer, rectifier, filter, and regulator stages in linear supplies. Students trace voltage from mains input to regulated DC output.

Lesson 2 • Switched-Mode Power Supply Fundamentals

Explains SMPS topologies including flyback, forward, and half-bridge designs. Understanding switching action is essential before diagnosing SMPS faults.

Lesson 3 • Protection Circuits and Safety Features

Covers overvoltage, overcurrent, and thermal protection circuit operation and testing. Students verify protection functions before returning repaired supplies to service.

Lesson 1 • Bias Setting and Quiescent Current

Teaches measurement and adjustment of output stage quiescent current. Correct bias prevents crossover distortion and protects output transistors from thermal runaway.

Lesson 2 • Common Amplifier Fault Diagnosis

Covers no-output, distorted-output, and one-channel-dead fault scenarios. Students apply signal tracing from input jack to speaker terminals.

Lesson 3 • Amplifier Topology Review

Covers Class A, AB, B, and D amplifier configurations and their trade-offs. Topology knowledge guides which stages to test first during diagnosis.

Lesson 1 • Multilayer PCB Repair Techniques

Covers via repair, trace reconstruction, and pad lifting on multilayer boards. Students restore PCB integrity after physical damage or failed component removal.

Lesson 2 • LCD and LED Display Systems

Covers backlight driver circuits, T-CON boards, and panel signal paths. Display faults are among the most common consumer electronics repair scenarios.

Lesson 3 • Mainboard and Logic Fault Diagnosis

Teaches diagnosis of microcontroller, memory, and bus faults on consumer mainboards. Students use scope and logic probes to identify digital signal failures.

Lesson 1 • Warranty, Liability, and Customer Communication

Covers repair warranty policies, liability limitation, and clear customer communication. Professional communication prevents disputes and supports repeat business.

Lesson 2 • Post-Repair Inspection and Testing

Covers visual inspection checklists, functional testing sequences, and burn-in procedures. Systematic post-repair testing catches secondary faults before customer delivery.

Lesson 3 • Continuous Improvement and Skill Development

Establishes habits for tracking repair outcomes, learning from failures, and updating technical knowledge. Ongoing improvement sustains competitiveness in a rapidly evolving field.