💻 Laptop Chip Level Repairing Course By Rafi Sir (Schema Guru) 🔹 LEVEL 1 – BASIC (Foundation Level) • Introduction to Laptop Motherboard Architecture • Identification of Motherboard Sections (Power, Charging, BIOS, CPU) • Basic Electronic Components – Resistor, Capacitor, Inductor • Diode, Zener Diode & LED Testing • Transistor Basic (NPN & PNP) • Introduction to Multimeter (Voltage, Continuity, Resistance) • AC Adapter & DC Jack Testing • Understanding Voltage Lines (3V, 5V Basics) • Soldering & Desoldering Techniques • Common Laptop Problems & Basic Troubleshooting 🔹 LEVEL 2 – INTERMEDIATE (Core Technical Level) • Laptop Power Sequence Theory • VIN, +3VALW, +5VALW Concept • MOSFET Working (N-Channel & P-Channel) • Charging Section Circuit Explanation • Charging IC Basics & Testing • B+ Line & Short Circuit Detection • Coil & Power Rail Testing • BIOS IC Identification & Programming Basics • KBC (Keyboard Controller) Introduction • Schematic & Boardview Reading Basics 🔹 LEVEL 3 – PROFESSIONAL (Advanced Chip Level) • Complete Power Sequence Practical • Enable Signals & Power Good Signals • SIO/KBC Working & Signals • CPU Core Voltage (Vcore) Concept • Graphics Section Testing • LCD Backlight Circuit Troubleshooting • RAM Section & No Display Repair • BIOS Corruption & Advanced Programming • Thermal Sensor & Protection Circuit • Dead Motherboard Repair Practical 🔹 LEVEL 4 – MASTER LEVEL (Expert Advanced) • Advanced Short Circuit Finding (Injection Method) • Oscillator & Crystal Working Theory • Clock Signals & Reset Signals • EC/KBC Programming • PCH Working Concept • BGA Fault Identification • Reballing Basics • Advanced Charging Section Diagnosis • Data Line Troubleshooting (SMBus, I2C) • Real Case Studies (100+ Practical Repairs) • Live Practical Fault Finding Sessions • Professional Repairing Workflow & Business Setup Guidance