Phone · Motorola · Moto E40
Motorola Moto E40 Water Damage Repair
Water Damage Repair guide for the Motorola Moto E40
Before you begin
Tools
- Phillips #000 screwdriver
- Plastic opening picks
- Spudger tool
- Tweezers
- Heat gun
- SIM eject tool
- Soft brush
Parts / materials
- 99% Isopropyl alcohol
- Microfiber cloth
- Compressed air
Safety
- Wear safety glasses to protect your eyes when handling liquid solvents and compressed air.
- Disconnect the battery immediately to prevent electrical shorting and permanent component failure.
- Perform cleaning in a well-ventilated area away from open flames.
Overview
Step-by-step
- 1
Power off the phone
1 minPress and hold the power button, then select power off to ensure no live current flows through the device.
- 2
Remove the SIM tray
1 minInsert a SIM eject tool into the small pinhole on the left edge of the phone to pop out the tray.
- 3
Heat the back cover
2 minApply mild heat around the outer perimeter of the back cover using a heat gun to soften the plastic clips and adhesive.
- 4
Unclip the back cover
4 minInsert a plastic opening pick between the display frame and back cover, sliding around the edges to release the plastic clips.
- 5
Disconnect the fingerprint sensor
2 minSlightly lift the back cover and use precision tweezers to carefully pop off the fingerprint flex cable press connector.
- 6
Unscrew the upper motherboard shield
3 minRemove the Phillips #000 screws holding the upper plastic protective bracket over the mainboard.
- 7
Remove the upper motherboard shield
1 minPry up the plastic shield using a nylon spudger and set it aside.
- 8
Disconnect the battery
1 minUse the flat end of a spudger to pop off the battery flex cable connector from the motherboard to prevent short circuits.
- 9
Disconnect internal flex cables
2 minDisconnect the display flex cable, sub-board interconnect cable, and antenna coaxial cable from the motherboard.
- 10
Remove motherboard screws
2 minUnscrew the Phillips #000 screws holding the motherboard onto the phone frame.
- 11
Extract the motherboard
2 minGently lift the motherboard out of the chassis using a spudger, handling it by the edges.
- 12
Unscrew the loudspeaker cover
2 minRemove the Phillips #000 screws securing the bottom speaker assembly to the frame.
- 13
Extract the sub-board
2 minDisconnect the remaining flex connector on the lower daughterboard and pry the sub-board out of the frame.
- 14
Scrub the motherboard
5 minDip a soft brush in 99% isopropyl alcohol and gently scrub away all visible liquid residue and corrosion from the board.
- 15
Clean the sub-board
4 minClean corrosion off the sub-board, USB-C port, and connector contacts using the isopropyl alcohol and brush.
- 16
Dry all components
10 minUse compressed air to blow away loose alcohol residue, then allow all parts to air dry completely for at least one hour.
After your Motorola Moto E40 water damage repair
Power the Moto E40 back on and test the water damage 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 E40 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 E40 repair context in the encyclopedia, or open related DIY guides.
