How to change SmartPhone Micro USB Jack pin | Mobile Phone Charging Port replacement Tutorial#18

How to Replace Micro USB Charging Port on Android Phone | Step-by-Step Mobile Repair Guide
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📄 YouTube Description:
🔌 In this video, I’ll show you how to professionally replace a Micro USB charging port (charging jack) on an Android smartphone motherboard, step-by-step. This repair tutorial is ideal for mobile technicians, electronics hobbyists, and DIY repair enthusiasts.
If your phone isn’t charging or only works when the cable is bent — the charging port might be damaged. Follow this detailed guide to safely remove the faulty port and install a new one without damaging the PCB or nearby components.
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🛠️ Tools & Materials Used:
• Hot air rework station (set to 350°C–380°C)
• Soldering iron with 0.4mm solder wire
• Flux
• Heat-resistant tape
• Solder wick (Mechanic R350 recommended)
• MBC (Motherboard Cleaner)
• PCB holder
• Cotton swabs
• New Micro USB charging connector
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🧰 Step-by-Step Micro USB Port Replacement Tutorial:
1. Protect Surrounding Components
o Cover all nearby SMD components using heat-resistant tape to prevent accidental damage from hot air.
2. Secure PCB in Holder
o Place the phone's motherboard securely in a PCB holder for stability while working.
3. Apply Flux
o Generously apply flux around the Micro USB jack to make desoldering easier and cleaner.
4. Heat the Charging Port
o Use a hot air rework station at 350°C to 380°C and heat the port evenly until the solder melts.
5. Remove the Damaged Jack
o Carefully lift the charging port once the solder is fully melted. Avoid pulling too hard to protect PCB pads.
6. Clean Old Solder
o Use R350 solder wick to remove excess solder from the PCB pads for a clean new connection.
7. Install the New Connector
o Place the new Micro USB jack in the exact position.
8. Solder Back Pins First
o Using a soldering iron and 0.4mm solder wire, solder the back data and power pins of the connector.
9. Solder the Side Ground Pads
o Apply solder to all side points (grounding pads) of the new jack for stability and proper grounding.
10. Final Cleaning
• Use MBC and a cotton swab to clean flux residue and inspect the solder joints.
11. Tips & Troubleshooting
• At the end of the video, I explain what to do if too much solder is applied, how to correct solder bridges, and tips for avoiding common mistakes.
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💡 Expert Tips:
• Always use flux generously to ensure clean joints.
• Avoid overheating to prevent PCB track damage.
• Don’t rush — perfect soldering takes patience and precision.
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