Xiaomi Redmi Note 9 Sub Board Mic Speaker Handsfree Problem | Sound Not Working Solution
In this video, you will learn how to fix Xiaomi Redmi Note 9 sub board mic, speaker, and handsfree problem step by step.
If your Redmi Note 9 microphone not working, loudspeaker sound not coming, ringer sound problem, earphone or handsfree not detected, low sound, or sound cuts automatically, this video provides a complete hardware-level solution related to the sub board.
In this video you will learn:
• Sub board mic & speaker line checking
• Handsfree jack testing
• Audio lines continuity test
• Sub board to main board connection
• Practical hardware repair solution
This video is useful for mobile repair technicians, beginners, and mobile hardware learners.
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