Phone · Motorola · Moto G40 Fusion
Motorola Moto G40 Fusion Microphone Repair
Microphone Repair guide for the Motorola Moto G40 Fusion
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Anti-static wrist strap
- Tweezers
- SIM eject tool
- Heat gun or hair dryer
Parts / materials
- Replacement Moto G40 Fusion microphone sub-board
- Pre-cut back cover adhesive strips
Safety
- Always disconnect the battery before handling internal electronic components.
- Wear eye protection when heating and prying plastic panels.
- Do not bend or puncture the battery with metal tools.
Overview
Step-by-step
- 1
Power Off the Device
1 minPress and hold the power button, then select Power Off on the screen before beginning any work.
- 2
Eject the SIM Card Tray
1 minInsert a SIM eject tool into the hole next to the tray on the left side of the phone to pop it out.
- 3
Heat the Rear Cover Edges
2 minApply gentle heat around the perimeter of the back panel for two minutes to soften the internal adhesive.
- 4
Pry Open the Rear Cover
3 minInsert a plastic opening pick between the rear panel and frame, sliding it around the edges to release the perimeter clips.
- 5
Disconnect the Fingerprint Cable
2 minSlightly lift the back cover and use a spudger to detach the fingerprint sensor flex cable from the motherboard.
- 6
Unscrew the Lower Speaker Bracket
2 minRemove the Phillips #00 screws securing the bottom plastic speaker enclosure over the daughterboard.
- 7
Remove the Speaker Enclosure
1 minPry up the edge of the lower speaker assembly with an opening tool and lift it out of the chassis.
- 8
Disconnect the Battery Flex Cable
1 minUse a plastic spudger to disconnect the main battery press-fit connector to disable power during the repair.
- 9
Disconnect the Interboard Ribbon Cable
1 minPry up the lower end of the main flex ribbon cable from the microphone sub-board.
- 10
Disconnect the Antenna Coaxial Cable
1 minUse fine tweezers to gently unsnap the white antenna coax connector from the sub-board header.
- 11
Remove the Old Microphone Sub-board
2 minInsert a flat opening tool under the sub-board containing the defective microphone and carefully lift it clear.
- 12
Position the Replacement Sub-board
2 minSet the new replacement microphone sub-board into the lower housing recess until it lies completely flat.
- 13
Reconnect the Antenna and Main Cables
2 minSnap the coaxial antenna head and the interboard flex ribbon cable securely onto their sub-board connectors.
- 14
Reattach the Lower Speaker Enclosure
2 minAlign the speaker housing over the new sub-board and reinsert the Phillips screws tightly.
- 15
Reconnect Battery and Fingerprint Cables
2 minAttach the battery connector to the motherboard, then reconnect the back cover's fingerprint sensor cable.
- 16
Reseal and Press the Rear Cover
2 minAlign the back cover onto the rear frame and press firmly along all edges until the plastic clips snap into place.
After your Motorola Moto G40 Fusion microphone repair
Power the Moto G40 Fusion 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 G40 Fusion 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 G40 Fusion repair context in the encyclopedia, or open related DIY guides.
