OPPO A15s Mic Speaker Buzzer Problem Solution Audio Ways Ringer Not Working Fix Hardware Repair Guid

Описание: In this video, we show the complete hardware solution for OPPO A15s mic, speaker, and buzzer problems. If your voice not recording, mic not working, speaker low, ringer dead, or buzzer no sound, this step-by-step repairing guide will help you fix it.
We include mic ways, speaker ways, buzzer jumper ways, track checking, component testing, sub-board faults, and audio IC checking.
This solution is perfect for mobile technicians and beginners who want accurate, clear, and reliable hardware repair instructions.

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✅ 30 Step-by-Step Repair Guide

Disconnect the battery before starting.

Open the back cover of OPPO A15s carefully.

Remove the sub-board shield.

Inspect mic and speaker connectors for corrosion.

Clean the mic area using IPA and a soft brush.

Clean the speaker area the same way.

Check the sub-board for broken components.

Test the speaker with a multimeter.

Test the mic using continuity mode.

Replace mic if physically damaged.

Replace speaker if no resistance appears.

Check mic ways to the sub-board.

Check speaker ways to the sub-board.

Apply jumper if track is cut.

Inspect buzzer pads for carbon/dust.

Check buzzer IC near the sub-board.

Reflow buzzer IC if loose.

Check continuity from main board to sub-board.

Inspect the flex cable for damage.

Replace sub-board if cracked.

Insert a new mic if still no input.

Install a new speaker if still no sound.

Reassemble the phone.

Power on and test audio.

Record a voice to test mic.

Play sound to test speaker.

Test ringer notifications.

Check during call for real mic test.

Perform final cleaning inside.

Close back cover and complete the repair.

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