Tecno Camon 16 Audio Circuit Problem – Mic, Speaker & Audio IC Hardware Repair Guide

Описание: Board-level repair guide for Tecno Camon 16 audio issues including no sound, mic not working, earpiece silent, speaker distortion, low volume, and audio IC faults. Covers earpiece and loudspeaker path checking, microphone line continuity, audio IC voltage rails, PMIC audio output, filter and coil inspection, jumper solutions, and motherboard-level diagnostics for professional mobile repair technicians.

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🧰 30 HARDWARE REPAIR STEPS

Remove back cover

Disconnect battery

Remove motherboard

Inspect earpiece connector

Inspect loudspeaker connector

Inspect microphone connector

Check mic VCC voltage

Check mic GND line continuity

Test speaker voltage

Check speaker ground path

Inspect audio IC pins

Test audio IC power supply

Check filter and coil components

Measure amplifier IC output

Check PMIC audio rails

Jumper broken mic or speaker line

Reflow audio IC pins

Replace audio IC if faulty

Replace mic if damaged

Replace speaker if damaged

Test earpiece function

Test loudspeaker function

Test microphone recording

Reassemble motherboard partially

Power on device and test audio

Confirm mic and speaker full volume

Confirm earpiece clarity

Check for distortion

Fully reassemble phone

Deliver to customer after QC

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