Phone · Samsung · Galaxy S9 Plus
Samsung Galaxy S9 Plus Water Damage Repair
Water Damage Repair guide for the Samsung Galaxy S9 Plus
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic opening picks
- Spudger tool
- Phillips #00 screwdriver
- Soft-bristled brush
- SIM eject tool
- Compressed air
Parts / materials
- 99% Isopropyl alcohol
- Replacement back cover adhesive tape
- Lint-free microfiber cloth
Safety
- Disconnect the battery cable immediately after removing the midframe to prevent electrical shorts.
- Wear protective eyewear while using isopropyl alcohol and compressed air.
- Work in a well-ventilated area to avoid inhaling high-concentration alcohol fumes.
- Do not puncture or apply direct heat to the lithium-ion battery.
Overview
Step-by-step
- 1
Power Off Device
1 minTurn off the phone completely and use a SIM eject tool to remove the SIM and microSD card tray.
- 2
Heat Rear Glass
3 minApply heat evenly around the outer edges of the rear glass with a heat gun or hairdryer for 2 to 3 minutes to soften the adhesive.
- 3
Attach Suction Cup
2 minPlace a suction cup on the lower third of the rear glass cover and gently pull upward to create a small gap.
- 4
Slice Rear Adhesive
5 minInsert a plastic opening pick into the gap and slice along all four edges to separate the adhesive.
- 5
Disconnect Fingerprint Cable
2 minGently hinge open the rear glass from the right side and use a spudger to disconnect the fingerprint sensor flex cable.
- 6
Unscrew Midframe Assembly
4 minRemove the 15 Phillips #00 screws holding the wireless charging pad and plastic midframe to the phone frame.
- 7
Remove Wireless Charging Coil
2 minPry up the top edge of the wireless charging assembly and lift it off the chassis.
- 8
Disconnect Battery Cable
1 minUse a plastic spudger to pry the battery connector straight up from the motherboard to cut power.
- 9
Remove Loudspeaker Assembly
2 minPry up and pull out the loudspeaker module covering the lower portion of the frame.
- 10
Disconnect Board Cables
4 minDisconnect the display cable, front camera flex, iris scanner, headphone jack, and lower sub-board flex connectors from the motherboard.
- 11
Remove Main Logic Board
3 minRemove the single Phillips screw securing the motherboard, then carefully tilt and lift the board out of the frame.
- 12
Clean Motherboard with Alcohol
10 minSubmerge the motherboard in 99% isopropyl alcohol and gently scrub away water residue and corrosion using a soft-bristled brush.
- 13
Clean Charging Port Sub-Board
5 minScrub the USB-C port, sub-board components, and ribbon cable ends with 99% isopropyl alcohol to strip away mineral deposits.
- 14
Dry Internal Components
15 minUse compressed air to blow out trapped moisture from beneath shield cans and let all parts air dry completely for at least two hours.
- 15
Reinstall Logic Board
3 minSet the logic board back into the frame, ensuring no flex cables are trapped beneath it, and secure it with the retaining screw.
- 16
Reconnect Cables and Test
5 minReconnect all display and sensor flex cables, attach the battery, and power on the phone to test for normal operation before applying final adhesive.
After your Samsung Galaxy S9 Plus water damage repair
Power the Galaxy S9 Plus 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 Samsung Galaxy S9 Plus job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Samsung Galaxy S9 Plus repair context in the encyclopedia, or open related DIY guides.
