Phone · Motorola · Moto Edge 50 Fusion 5G
Motorola Moto Edge 50 Fusion 5G Microphone Repair
Microphone Repair guide for the Motorola Moto Edge 50 Fusion 5G
Before you begin
Tools
- Phillips #00 screwdriver
- Plastic opening picks
- Suction handle
- Heat gun or iOpener
- Plastic spudger
- ESD-safe tweezers
- SIM eject tool
Parts / materials
- Replacement sub-board with microphone
- Back cover adhesive strips
- 99% Isopropyl alcohol
Safety
- Wear safety glasses when heating and prying open glass or plastic panels.
- Disconnect the battery flex cable before touching or replacing sub-board electronics.
- Do not puncture or bend the internal lithium-ion battery while using prying tools.
Overview
Step-by-step
- 1
Power off device and eject SIM tray
2 minPress and hold the power button to turn off the phone completely. Insert a SIM eject tool into the hole at the bottom edge to remove the SIM card tray.
- 2
Heat rear cover edges
3 minApply a heated iOpener or heat gun around the edges of the rear panel for two minutes to soften the adhesive.
- 3
Create opening gap
3 minAttach a suction cup near the bottom edge of the back panel and pull up firmly. Insert a plastic opening pick into the gap created between the panel and frame.
- 4
Slice back cover adhesive
4 minSlide the opening pick around all four sides of the phone to cut through the perimeter tape. Keep the pick depth shallow to avoid snagging internal components.
- 5
Remove back cover
2 minGently lift the back cover away from the body once the adhesive is fully separated. Set the back panel aside in a clean location.
- 6
Unscrew lower speaker assembly
3 minUse a Phillips #00 screwdriver to remove the screws securing the lower loudspeaker housing. Store the screws in a secure tray.
- 7
Remove loudspeaker housing
2 minPry up the edges of the loudspeaker housing using a spudger. Lift the housing out of the phone chassis.
- 8
Disconnect battery cable
2 minLocate the battery flex cable connector near the main motherboard. Use a plastic spudger to pop the connector straight up and disconnect power.
- 9
Disconnect main interconnect cable
2 minUse the spudger to pry the main interconnect flex connector off the bottom sub-board assembly.
- 10
Disconnect antenna coaxial cables
2 minGrasp the head of the antenna cables with fine tweezers and pull straight up to disconnect them from the sub-board. Handle the tiny connectors carefully.
- 11
Unscrew microphone sub-board
2 minRemove the remaining Phillips screws holding the daughterboard containing the primary microphone to the frame.
- 12
Pry out microphone sub-board
2 minInsert a spudger under the edge of the sub-board and lift it out from the frame. Inspect the rubber microphone seal attached to the board.
- 13
Clean frame microphone channel
2 minCheck the microphone opening in the frame for dirt or adhesive blockages. Clean the acoustic channel using isopropyl alcohol and a soft brush.
- 14
Set replacement sub-board in place
3 minAlign the new sub-board equipped with the replacement microphone into the lower frame cutout. Press down lightly until it rests flush.
- 15
Secure sub-board screws
2 minReplace and tighten the Phillips screws on the sub-board to secure it tightly to the device housing.
- 16
Reconnect flex and antenna cables
3 minSnap the antenna coax cables and main interconnect flex cable back onto their sub-board sockets. Reconnect the battery flex cable last.
- 17
Reinstall loudspeaker housing
3 minPosition the loudspeaker housing over the lower sub-board section and press down. Fasten all speaker screws using your Phillips screwdriver.
- 18
Apply adhesive and seal device
4 minApply pre-cut replacement adhesive tape along the frame perimeter. Press the rear cover down tightly along the edges, then reinsert the SIM tray.
After your Motorola Moto Edge 50 Fusion 5G microphone repair
Power the Moto Edge 50 Fusion 5G 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 Edge 50 Fusion 5G job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Prefer a professional repair?
Book Motorola Moto Edge 50 Fusion 5G microphone repair at LML Repair in Seattle — same-day options available.

