Basic Laptop Repairing Process

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By laptoprefix

Initial Inspection

  • Check for physical damage or missing components
  • Observe symptoms (no power, no display, overheating, etc.)
  • Note down the issue as described by the user

Power Supply & Adapter Check

  • Test the charger and DC jack
  • Use a multimeter to confirm voltage and continuity
  • Ensure battery and charging circuits are working

Disassembly & Visual Diagnosis

  • Carefully open the laptop
  • Check for burn marks, corrosion, or damaged components
  • Inspect motherboard, RAM, HDD/SSD, and connectors

Component Testing

  • Test RAM, hard drive, and display using external tools
  • Use POST card, DC power supply, and multimeter
  • Check power rails (3V, 5V, etc.) and shorted lines

BIOS & Firmware Check

  • Reprogram or update the BIOS if corrupted
  • Use tools like LRT Pro or BIOS Extractor for analysis
  • Replace BIOS IC if necessary

Chip-Level Repair

  • Perform soldering or replacement of faulty ICs
  • Reball or reflow chips (GPU, PCH, etc.) if needed
  • Fix charging circuits, display faults, or USB lines

Reassembly & Testing

  • Reassemble the laptop after successful repair
  • Test all functions: power, display, ports, keyboard, Wi-Fi, battery
  • Run a burn-in or stress test for stability

Understanding RAM Types and Pinouts

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