Many smartphone users face the frustration of a non-functioning microphone, especially after accidental water exposure. If your Xiaomi Mi 10T Pro microphone isn’t working, this guide will walk you through the process of diagnosing and fixing the issue, whether you’re a DIY enthusiast or planning to visit a professional repair shop.
Device Details
Model: Xiaomi Mi 10T Pro 5G
Announced: 2020, September 30
Defect Phenomenon
Symptoms: The microphone doesn’t work during voice calls (e.g., WeChat, WhatsApp), and the other party cannot hear your voice.
Additional Issue: The screen shows a vertical line (though unrelated to the microphone issue, it may indicate other potential damage).
Troubleshooting
Disassemble the Phone:
- Carefully disassemble the phone to access the motherboard.
- Check for corrosion, especially around the microphone area.
Inspect for Water Damage
- Examine the motherboard under a microscope.
- Focus on the top area where the microphone is located.
Identify Corrosive Damage
- Look for signs of corrosion on both sides of the motherboard.
Repair Process
Clean Corrosive Areas
- Use a PCB cleaner to clean the damaged areas.
- Remove the microphone’s shielding cover using tweezers and a hot air gun.
Replace the Microphone
- Desolder the damaged microphone using a hot air gun.
- Apply the solder mask and tin paste to the PCB pads.
- Clean the pads thoroughly with PCB cleaner to prevent solder paste from seeping into the new microphone.
Install the New Microphone
- Position the new microphone on the PCB.
- Use a hot air gun to solder it securely.
Reattach the Shielding Cover
- After verifying the repair, solder the shielding cover back over the microphone.
Final Testing
Test Microphone Functionality
- Dial *#*#64663## to access the test interface.
- Verify that both the main microphone and the top microphone are working normally.
Assemble and Retest
- Reassemble the phone completely.
- Test the microphone using voice call applications like WeChat or WhatsApp.
Conclusion
By following these steps, you can successfully repair a water-damaged Xiaomi Mi 10T Pro microphone. This guide empowers you to restore your phone’s voice functionality, giving you confidence in resolving the issue effectively. Whether you tackle the repair yourself or share these insights with a professional, you’re one step closer to a fully functional smartphone.
Additional Suggestions:
- Always exercise caution when using a hot air gun to avoid damaging other phone components.
- Ensure thorough cleaning to prevent future corrosion and damage.
Learn more advanced repair techniques with detailed tutorials at REWA Academy.
