Phone · LG · G7 One
LG G7 One Water Damage Repair
Water Damage Repair guide for the LG G7 One
Before you begin
Tools
- Precision screwdriver set
- Plastic opening picks
- Anti-static wrist strap
- ESD-safe tweezers
- Magnifying glass or headlamp
- Heat gun or iOpener
- Soft nylon brush
- Suction handle
Parts / materials
- 99% Isopropyl alcohol
- Compressed air can
- Pre-cut back cover adhesive
- Microfiber cloth
Safety
- Always wear an anti-static wrist strap to prevent electrostatic discharge while touching circuit boards.
- Work in a well-ventilated room to safely handle high-concentration isopropyl alcohol vapors.
- Disconnect the battery before touching internal components to prevent short-circuit fires or electric shock.
Overview
Step-by-step
- 1
Eject the SIM tray
1 minInsert a SIM eject tool into the hole at the top edge of the device to pop out the tray. Remove the SIM and microSD card tray completely.
- 2
Heat the rear glass
2 minApply a heat gun or warm iOpener along the perimeter of the back cover for 2 minutes to soften the adhesive.
- 3
Slice the rear adhesive
5 minAttach a suction cup to the lower back panel and pull up gently to create a gap. Insert a plastic opening pick and slide it along the edges to cut through the glue.
- 4
Remove the back cover
2 minLift the rear glass off the frame slowly to avoid cracking it. Set the back panel aside on a clean surface.
- 5
Unscrew the midframe cover
4 minUse a Phillips #00 screwdriver to remove the 14 screws securing the plastic midframe and wireless charging assembly.
- 6
Remove the upper midframe
2 minInsert a spudger under the edge of the upper midframe shield and gently pry up to release the plastic clips.
- 7
Disconnect the battery flex cable
1 minPry the battery connector straight up from its motherboard socket using a plastic spudger. Disconnecting power immediately prevents further electrical shorting.
- 8
Disconnect motherboard ribbon cables
3 minUnplug the display, charging port, camera, and antenna flex connectors from the logic board using plastic tweezers.
- 9
Extract the motherboard
2 minGently lift the logic board out of the phone body using ESD-safe tweezers, taking care not to snag any remaining cables.
- 10
Scrub corrosion with isopropyl alcohol
10 minSubmerge the logic board in high-concentration isopropyl alcohol and scrub all corrosion-prone areas with a soft nylon brush under a magnifying glass.
- 11
Dry the logic board
15 minBlow compressed air across the motherboard components to clear remaining alcohol, then let it dry completely on a clean surface.
- 12
Inspect component traces
5 minExamine the board under a magnifying lamp for missed residue, burnt trace pathways, or blown capacitors.
- 13
Reinstall the motherboard
4 minPlace the logic board back into the phone chassis and snap all internal ribbon cable press-connectors securely back into place.
- 14
Reconnect the battery
1 minPress the battery cable connector flat onto its board terminal until it clicks into position.
- 15
Reseal the back cover
5 minReattach the plastic midframe with its screws, apply fresh back glass adhesive strips, and press the rear panel firmly down.
After your LG G7 One water damage repair
Power the G7 One 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 LG G7 One job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more LG G7 One repair context in the encyclopedia, or open related DIY guides.
