Huawei Y7 2019 Mic Speaker Ear Speaker Handfree Jack Problem Solution

In this video, you'll learn how to fix mic, loudspeaker, ear speaker, and handsfree jack problems in Huawei Y7 2019. Whether your voice isn’t recorded, sound is missing during calls, speaker doesn't work, or earphones aren’t detected, this 30-step full hardware guide walks through component testing, IC inspection, line tracing, and replacement. Perfect for mobile technicians and DIY repairers.

🔧 Step-by-Step Instructions:
Power off the phone completely.

Remove the SIM tray and back panel carefully.

Disconnect the battery connector.

Unscrew and remove speaker sub-board shield.

Visually inspect loudspeaker module for corrosion.

Clean the speaker contacts and pads with IPA.

Replace speaker if the membrane is torn or it has no continuity.

Check ear speaker (top speaker) continuity with multimeter.

Remove display and access ear speaker if required.

Clean contacts and replace ear speaker if faulty.

Locate and inspect the mic on the sub-board.

Test mic using voice recording or dialer codes.

Replace mic if sound is not recorded or too low.

Test mic voltage using multimeter (usually 1.8V or 2.8V).

Trace mic signal line to the audio IC.

Jumper broken mic lines using 0.1mm enamel wire.

Inspect headphone jack for damage or obstruction.

Clean the audio jack thoroughly.

Test jack detection using headset icon and audio routing.

Replace handsfree jack if detection fails.

Locate audio IC on the mainboard.

Measure voltages on audio IC lines.

Reball or replace audio IC if output is faulty.

Inspect capacitors and resistors near audio IC.

Replace damaged passive components as needed.

Check continuity of speaker and mic signal lines to IC.

Test audio on different modes: loudspeaker, call, headset.

Flash stock firmware if issue may be software-based.

Finalize by assembling all components.

Test all audio functions before returning the device.

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