Phone · Motorola · Moto G9 Plus
Motorola Moto G9 Plus Microphone Repair
Microphone Repair guide for the Motorola Moto G9 Plus
Before you begin
Tools
- Heat gun or iOpener
- Suction cup
- Opening picks
- Phillips #00 screwdriver
- Spudger
- Precision tweezers
- SIM eject tool
Parts / materials
- Replacement sub-board with microphone
- Back cover adhesive pre-cut strip
- Isopropyl alcohol (99%)
Safety
- Wear eye protection when applying heat near potentially cracked glass panels.
- Do not bend or puncture the battery during internal component removal.
- Avoid touching delicate PCB components with metal tools while power is connected.
Overview
Step-by-step
- 1
Power off phone
1 minPress and hold the power button, then select Power Off to turn off your Moto G9 Plus completely.
- 2
Eject SIM tray
1 minInsert a SIM eject tool into the hole on the left edge of the phone and pull out the card tray.
- 3
Heat rear cover
2 minApply a heated iOpener or heat gun to the edges of the rear cover for two minutes to soften the adhesive.
- 4
Apply suction cup
2 minPlace a suction cup on the lower back cover and pull upward gently to create a small gap.
- 5
Slice perimeter adhesive
3 minInsert an opening pick into the gap and slide it along all sides to cut through the rear panel tape.
- 6
Lift rear cover
2 minPivot the rear panel open carefully, paying attention not to damage the attached fingerprint sensor flex cable.
- 7
Unscrew speaker assembly
3 minRemove the seven Phillips #00 screws securing the bottom loudspeaker cover to the frame.
- 8
Remove loudspeaker module
2 minInsert a plastic spudger beneath the loudspeaker housing and pry it up out of the phone body.
- 9
Disconnect main flex cable
1 minPry up the lower press connector of the main ribbon cable from the daughterboard using a spudger.
- 10
Disconnect coaxial cable
1 minUse fine tweezers to gently unclip the antenna coaxial cable connector from the daughterboard.
- 11
Remove microphone board
2 minPry the bottom sub-board containing the primary microphone up from the frame adhesive and lift it out.
- 12
Install new sub-board
2 minPosition the new microphone daughterboard in the lower cavity and press gently until it sits flat.
- 13
Reconnect coaxial cable
1 minAlign the antenna coaxial cable head over its socket on the new board and snap it into place.
- 14
Reconnect main flex cable
1 minPress the lower main interconnect ribbon connector directly onto the daughterboard until it clicks.
- 15
Reinstall speaker module
2 minPlace the loudspeaker assembly back over the bottom daughterboard and push down gently.
- 16
Secure speaker screws
3 minReinsert and tighten the seven Phillips #00 screws to firm the loudspeaker housing in place.
- 17
Reseal back cover
3 minApply new custom adhesive tape around the frame perimeter, align the rear cover, and press firmly.
- 18
Reinsert SIM tray
1 minSlide the SIM card tray back into its slot on the side of the device until flush.
After your Motorola Moto G9 Plus microphone repair
Power the Moto G9 Plus back on and test the microphone repair function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Motorola Moto G9 Plus job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Motorola Moto G9 Plus repair context in the encyclopedia, or open related DIY guides.
