Infinix Hot 30i X669 Sub Board Problem Fix 🔧 | Charging, USB Not Recognized, Mic & Speaker Solution

In this video, you will learn how to fix Infinix Hot 30i X669 sub board charging, USB not recognized, microphone, and speaker problems step by step.

If your Infinix Hot 30i X669 is not charging, computer is not detecting USB connection, microphone is not working during calls, or speaker/ringer has no sound, this video provides a complete hardware-level repair solution with sub board troubleshooting and repair methods.

🔧 Problems Covered:

• Charging Not Working
• USB Not Recognized
• PC Not Detecting Phone
• Slow Charging Issue
• Microphone Not Working
• Speaker/Ringer No Sound
• USB Data Transfer Problem
• Sub Board Fault

🛠️ What You Will Learn:

• Charging port testing
• USB data line checking
• Sub board connector diagnosis
• Microphone troubleshooting
• Speaker line testing
• USB continuity checking
• PCB track repair methods
• Complete hardware repair solution

⚠️ Common Causes:

• Water damage
• Damaged charging port
• Faulty USB connector
• Broken D+ and D− USB lines
• Microphone failure
• Speaker circuit fault
• Damaged sub board connector
• PCB line cut issue

👨‍🔧 Perfect For:

✔ Mobile Repair Technicians
✔ GSM Hardware Engineers
✔ Mobile Repair Students
✔ Beginners Learning Mobile Repair

👉 Watch till the end for complete solution.
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Видео Infinix Hot 30i X669 Sub Board Problem Fix 🔧 | Charging, USB Not Recognized, Mic & Speaker Solution канала SMARTPHONE TECHNOLOGIES