Phone · Motorola · Moto G55 5G
Motorola Moto G55 5G Microphone Repair
Microphone Repair guide for the Motorola Moto G55 5G
Before you begin
Tools
- Phillips #00 screwdriver
- Plastic spudger
- Opening picks
- Suction handle
- Fine-tip tweezers
- Heat gun or iOpener
- SIM eject tool
Parts / materials
- Replacement microphone sub-board
- Pre-cut back cover adhesive
- Isopropyl alcohol (99%)
Safety
- Wear an anti-static wrist strap to prevent ESD damage to internal electronics.
- Always disconnect the battery flex cable before handling internal circuitry.
- Do not puncture or bend the internal battery while prying near components.
Overview
Step-by-step
- 1
Power Off Device
1 minPress and hold the power button, then tap 'Power Off' on the screen. Ensure the device is fully shut down before proceeding.
- 2
Remove SIM Tray
1 minInsert a SIM eject tool into the hole on the SIM card tray on the left edge of the phone. Push firmly to pop out the tray, then remove it.
- 3
Heat Back Cover
3 minApply a heated iOpener or heat gun around the rear panel perimeter for about 2 minutes to soften the adhesive. Keep the heat source moving to prevent thermal damage.
- 4
Slice Rear Adhesive
4 minAttach a suction cup to the lower rear cover and pull upward to create a slight gap. Insert an opening pick into the gap and slide it along the perimeter to cut the adhesive.
- 5
Remove Back Cover
2 minGently lift the back cover away from the midframe once all edges are sliced. Clean off remaining old adhesive from the frame edges.
- 6
Unscrew Lower Speaker Cover
3 minUse a Phillips #00 screwdriver to remove the screws holding the bottom speaker housing over the sub-board.
- 7
Remove Speaker Assembly
2 minInsert a plastic opening tool under the edge of the speaker cover and gently pry upward to detach it from the chassis.
- 8
Disconnect Battery Cable
1 minUse the edge of a plastic spudger to pry the battery flex connector straight up from its socket on the motherboard.
- 9
Disconnect Sub-Board Flex Cable
2 minPry up the interconnect flex cable connector on the bottom daughterboard using a plastic spudger.
- 10
Disconnect Coaxial Antenna Cables
2 minUse fine-tip tweezers to carefully lift the RF coaxial antenna connectors straight up off the sub-board.
- 11
Remove Defective Sub-Board
2 minInsert a flat plastic spudger under the edge of the sub-board assembly containing the primary microphone and pry it up from the chassis.
- 12
Install Replacement Sub-Board
2 minPosition the new microphone daughterboard into the lower chassis cavity and press gently until it sits flat.
- 13
Reconnect Antennas and Flex Cable
3 minAlign and press the RF coaxial connectors onto the sub-board terminals, then reconnect the main interconnect flex cable until it clicks.
- 14
Reconnect Battery and Reassemble Speaker
3 minSnap the battery flex connector back into its socket, place the speaker housing over the sub-board, and secure it with the Phillips screws.
- 15
Reseal Back Cover
3 minApply new pre-cut adhesive tape along the frame perimeter, align the rear cover, and press firmly around all edges to secure it.
- 16
Reinsert SIM Tray
1 minAlign the SIM card tray with its slot on the side of the device and push it in until flush with the body.
After your Motorola Moto G55 5G microphone repair
Power the Moto G55 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 G55 5G 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 G55 5G repair context in the encyclopedia, or open related DIY guides.
