Intro:
Agar aapka MacBook boot nahi ho raha, ya internal hardware fail ho gaya hai (jaise ports, power, fan, ya GPU issues), toh logic board (ya motherboard) ko replace karna padta hai. Ye guide aapko batayegi kaise safely logic board replace karte hain.

🧰 Tools You’ll Need:

  • Phillips #00 screwdriver

  • T6 Torx screwdriver

  • Spudger

  • Tweezers (optional)

  • New compatible Logic Board

⚠️ Important Safety Tips:

  • MacBook ko shutdown karo aur unplug karo.

  • Anti-static surface pe kaam karo.

  • Battery disconnect karna must hai.

📋 Step-by-Step Instructions:

🔹 Step 1: Bottom Case Remove Karo

  • MacBook ko ulta rakho.

  • 10 screws ko remove karo using Phillips #00 screwdriver.

  • Bottom case ko gently lift karke hata do.

🔹 Step 2: Battery Disconnect Karo

  • Spudger ka use karke battery connector ko logic board se disconnect karo.

🔹 Step 3: Hard Drive Remove Karo

  • Hard drive ke upar bracket ke 2 screws nikaalo.

  • Bracket hatao, hard drive ko lift karo, aur SATA cable disconnect karo.

🔹 Step 4: Optical Drive Remove Karo

  • Optical drive ke screws nikaalo.

  • SATA cable aur speaker wire ko disconnect karo.

  • Drive ko lift karke hata do.

🔹 Step 5: Fan Remove Karo

  • Fan ke connector aur 3 screws remove karo.

  • Fan ko side mein rakh do.

🔹 Step 6: All Cables Disconnect Karo

Logic board pe connected ye saare cables gently disconnect karo using spudger:

  • Keyboard & trackpad cable

  • Display data cable

  • iSight (camera) cable

  • Speaker cable

  • DC-in board cable

  • Battery indicator cable

  • Subwoofer cable

  • Infrared sensor cable

📌 Note: Cable connectors fragile hote hain — zyada force mat lagao.

🔹 Step 7: Logic Board Screws Remove Karo

  • Logic board ko hold kar rahe screws and grounding clips ko remove karo using T6 and Phillips screwdriver.

  • Heat sink connected hai, toh gently logic board ko lift karo along with the heat sink.

🔹 Step 8: Old Logic Board Ko Remove Karo

  • Board ko carefully nikaalo.

  • Dhyan rakho koi cable ya screw connected na ho.

🔹 Step 9: New Logic Board Install Karo

  • New board ko same position mein place karo.

  • Heat sink properly aligned ho.

  • Saare screws wapas lagao.

  • All cables ko fir se reconnect karo (step 6 ke reverse order mein).

  • Fan, hard drive, optical drive, aur battery ko bhi reinstall karo.

🔹 Step 10: Bottom Case Wapas Lagao

  • Bottom case ko place karo.

  • 10 screws se secure karo.

✅ Final Check:

  • MacBook on karo.

  • Check karo sab hardware sahi kaam kar raha hai ya nahi:

    • Display

    • Sound

    • USB Ports

    • Charging

    • Wi-Fi & Bluetooth

💡 Tips:

  • High-quality compatible logic board use karo — same model number wala.

  • Logic board replace karne ke baad PRAM and SMC reset karna helpful ho sakta hai.

  • Agar pehle thermal paste hataya ho, toh new thermal paste lagao before installing heat sink.

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