Phone · LG · V20 Mini
LG V20 Mini Water Damage Repair
Water Damage Repair guide for the LG V20 Mini
Before you begin
Tools
- Phillips #000 screwdriver
- Plastic spudger
- Opening picks
- Suction cup tool
- Heat gun or hair dryer
- Soft anti-static brush
- Tweezers
- SIM eject tool
Parts / materials
- 99% Isopropyl alcohol
- Lint-free microfiber cloth
- Replacement rear cover adhesive
Safety
- Wear protective eyewear when working with compressed air and chemical solvents.
- Always disconnect the battery before cleaning or handling sensitive electronics.
- Use isopropyl alcohol in a well-ventilated area away from heat sources or open flames.
Overview
Step-by-step
- 1
Remove the SIM Card Tray
1 minInsert a SIM eject tool into the pinhole on the side of the phone. Push firmly to eject and remove the SIM and microSD card tray.
- 2
Heat the Rear Cover
2 minUse a heat gun or hairdryer to evenly heat the rear panel edges for two minutes to soften the internal adhesive.
- 3
Slice Rear Panel Adhesive
5 minAttach a suction cup near the bottom edge and insert an opening pick into the gap to slice through the adhesive perimeter.
- 4
Lift Away Rear Cover
2 minSlowly lift the back cover off the chassis while using a spudger to detach any connected fingerprint sensor flex cables.
- 5
Unscrew the Midframe
4 minUse a Phillips #000 screwdriver to remove all visible screws securing the plastic midframe shield.
- 6
Pry Off Midframe
3 minInsert a plastic spudger around the edges of the midframe assembly and unhook it from the metal housing.
- 7
Disconnect Battery Flex Cable
1 minPry the battery press connector directly up from its motherboard socket using the flat end of a spudger.
- 8
Disconnect Motherboard Flex Cables
3 minPop off the display, front camera, headphone jack, and charging port ribbon connectors from the mainboard.
- 9
Extract the Motherboard
2 minCarefully pry up the main logic board using a spudger and lift it completely out of the frame.
- 10
Submerge Board in Isopropyl Alcohol
10 minPlace the motherboard into a clean container filled with 99% isopropyl alcohol to displace trapped water.
- 11
Scrub Away Corrosion
5 minGently scrub visible corrosion and mineral deposits off the circuit board using a soft anti-static brush.
- 12
Dry with Compressed Air
3 minBlow compressed air over the board to remove remaining alcohol, then let it air-dry completely on a lint-free cloth.
- 13
Reassemble the Device
6 minReinstall the logic board, reconnect all flex cables, secure the midframe with screws, and seal the back cover with fresh adhesive.
After your LG V20 Mini water damage repair
Power the V20 Mini 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 V20 Mini 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 V20 Mini repair context in the encyclopedia, or open related DIY guides.
