Laptop Repair Training

Device repair begins with customer service. You will learn what to pay attention to when taking a laptop for repair. Make your own checklist of the customer service administrator. You will learn how to use specialized programs for service centers.

You will also learn:

• what must be checked when taking a laptop for repair,
• why is it important to record the configuration of the laptop,
• what do external damages of the device case indicate,
• why you should pay attention to the decorative stickers and the condition of the screws of the case

During your studies at Bga center you will learn:

• Cleaning the cooling system. Replacement of thermal paste;
• Replacing the cooling fan;
• Replace the hinge covers laptop;
• Repair or replacement of the keyboard;
• Repair or replacement TouchPad;
• Laptop cover repair;
• Installation of Wi – Fi and other expansion modules;
• Flashing or replacing the matrix;

Laptop repair training

Correct diagnosis is the key to a successful repair. Therefore, we devote a sufficient amount of time to studying the troubleshooting of laptops.
You will learn:

• Diagnostics of faulty units and components;
• Visual inspection: traces of moisture, mechanical damage, repair in a third-party service center
• Checking the primary and secondary power supply circuits;
• Structure and components of the motherboard: controllers, chips, bridges, chipsets, processor mount;
• Block diagram of switching on and power parameters;
• Main problems with PWM controllers, types of transistors;
• The interaction of blocks and fault blocks;
• Differences in the connection of chips from different manufacturers;
• Voltage measurements by multimeter;
• Diagnosis with an oscilloscope: power phase, PWM controller, ROM;
• Used marking of radio components on the motherboard;
• Finding a short circuit on the laptop motherboard.

Laptop Diagnostics

• Basics of radio engineering;
• Radio components on the motherboard: resistor, capacitor, diode, inductor, transistor, filter coil;
• The layout of the board notebook;
• Determination of faulty elements by multimeter: resistance measurement, diode ringing, measurements of voltage drop in the circuit;
• Pulse-width modulator-based controllers and field-effect transistors;
• Search, selection and verification of elements (chokes, capacitors, transistors, diodes and Zener diodes);
• Overview of functional flowcharts;
• Reading charts and datasheets.

Circuitry

• Equipment, tools and consumables for soldering laptops;
• Types of solders and fluxes, stencils and BGA paste;
• Soldering technology of bga chips and SMD components;
• USB connector replacement;
• Elimination of short circuit on the board;
• Soldering by hot air soldering station Quick 861 DE;
• Soldering on infra – red platform-Thermopro IK-650;
• Dismantling of the BGA chip in compliance with the thermal profile;
• Preparing the chip for installation on the board;
• Installation of the chip with the use of Thermopro IR-650;
• Power management repair;
• Video chip replacement.

• Installing the Windows operating system;
• Firmware Flash chips BIOS programmer;
• Flashing or updating BIOS.

Introduction to Mac OS X, mac OS: versions, their differences and relationship to hardware architecture. Installing Mac OS X. Recovery Mode, creating a bootable device, and basic OS installation errors.

Hardware architecture:

• Block diagram of power supply units, G3Hot 3.42 V;
• SMC (Embedded Controller, EC);
• Charge controller, battery, MagSafe, MagSafe 2, power PSU;
• SMBus;
• GPU, LCD, LVDS/eDP;
• Peripherals internal: Keyboard & Trackpad, Camera, WiFi (Airport), Bluetooth, Audio, etc.;
• Temperature sensors, cooling fans and tachometers.
• Typical faults, engineering defects and ways of their elimination

Non typical faults:

• unskilled intervention,
• mechanical damage,
• liquid flooding,
• connection of non-certified devices and power supplies,
• unlock EFI bootloader.

Inspect your MacBook before starting repairs.
Primary diagnosis: symptoms, solution search algorithm.

Opening the device:

• necessary tools
• disassembling nuances: protective strips, hidden loops.

MacBook Diagnostics and Board Troubleshooting:

• MagSafe input circuit 3.42 V driver;
• Enabling signals EC (SMC) and MCP / PCH;
• Charge Controller and Power Switch ISL6258 / 6259;
• 3.3 V and 5 V standby voltage generator TPS51125.

Replacing defective components / assemblies on the board:

• Replacing external peripheral connectors (USB, Audio);
• Replacing internal peripherals (Keyboard, LVDS / eDP, WiFi, Speakers, Camera / ALS);
• MacBook video chip replacement.