Phone · Motorola · Moto Edge 40
Motorola Moto Edge 40 Microphone Repair
Microphone Repair guide for the Motorola Moto Edge 40
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Anti-static wrist strap
- Tweezers
- Heat gun or iOpener
- Suction cup
- SIM eject tool
Parts / materials
- Motorola Moto Edge 40 microphone sub-board
- Pre-cut back cover adhesive tape
- High-purity isopropyl alcohol
Safety
- Disconnect the battery immediately after opening to eliminate electrical hazards.
- Do not heat the device above 80°C to prevent lithium-ion battery damage.
- Wear safety eye protection to shield against potential glass slivers if the rear glass cracks.
Overview
Step-by-step
- 1
Power off device
1 minPress and hold the power button, then select Power Off on the screen to shut down the phone completely.
- 2
Eject SIM tray
1 minInsert a SIM eject tool into the hole at the bottom frame and press gently to pop out the SIM tray.
- 3
Heat rear panel
2 minApply a heat gun or iOpener along the perimeter of the back cover for 2 minutes to soften the rear adhesive.
- 4
Attach suction cup and insert pick
2 minPlace a suction cup near the bottom edge of the back cover, lift firmly, and slide a plastic opening pick into the gap.
- 5
Slice rear perimeter adhesive
4 minSlide the plastic pick carefully around all four edges of the back panel to cut through the adhesive seal.
- 6
Lift off back cover
1 minGently lift the back cover straight off the chassis and set it aside on a clean surface.
- 7
Remove upper bracket screws
2 minUse a PH00 screwdriver to remove the screws securing the upper motherboard shield.
- 8
Disconnect battery flex cable
2 minLift away the motherboard cover and use a flat plastic spudger to pry up the battery flex connector.
- 9
Unscrew lower speaker assembly
2 minRemove the Phillips screws holding down the lower speaker assembly near the bottom of the device.
- 10
Remove lower speaker housing
2 minPry up the speaker module using a plastic opening tool to expose the microphone sub-board.
- 11
Disconnect lower sub-board cables
2 minDisconnect the main interconnect flex cable and carefully unclip the coaxial antenna cable from the sub-board using tweezers.
- 12
Pry up microphone sub-board
2 minInsert a flat spudger underneath the lower sub-board carrying the primary microphone and gently lift it out.
- 13
Position new microphone sub-board
2 minAlign the replacement microphone sub-board into the lower recess of the phone frame.
- 14
Reconnect lower flex and coaxial cables
2 minPress the interconnect flex connector back onto the sub-board and reattach the coaxial antenna cable using tweezers.
- 15
Reconnect battery flex cable
1 minPress the battery connector straight down into its socket on the motherboard until it snaps into place.
- 16
Reattach lower speaker housing
2 minSet the lower speaker module back over the sub-board and reinstall its securing Phillips screws.
- 17
Apply back cover adhesive strip
3 minClean remaining adhesive off the frame with isopropyl alcohol, then lay down a fresh pre-cut adhesive gasket.
- 18
Press back cover into place
2 minAlign the back cover with the body of the phone and press firmly along the edges to seal the adhesive.
After your Motorola Moto Edge 40 microphone repair
Power the Moto Edge 40 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 40 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 Edge 40 repair context in the encyclopedia, or open related DIY guides.
