Phone · LG · V30
LG V30 Water Damage Repair
Water Damage Repair guide for the LG V30
Before you begin
Tools
- Phillips #00 screwdriver
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools / opening picks
- Spudger tool
- Soft brush
- Tweezers
- SIM eject tool
Parts / materials
- Isopropyl alcohol (99%)
- Compressed air
- Pre-cut rear glass adhesive strips
- Lint-free microfiber cloth
Safety
- Disconnect the battery press-connector immediately after removing the midframe to prevent short circuits.
- Wear safety glasses when scrubbing with isopropyl alcohol or using compressed air.
- Do not apply excessive heat to the device to avoid damaging the internal lithium-ion battery.
Overview
Step-by-step
- 1
Remove the SIM and MicroSD Card Tray
1 minInsert a SIM eject tool or straightened paperclip into the hole on the right edge of the frame. Eject and remove the card tray.
- 2
Heat the Rear Glass Panel
3 minApply a heat gun set to low temperature across the outer perimeter of the back cover for two minutes to soften the adhesive.
- 3
Apply Suction Cup to Rear Glass
2 minPress a suction cup onto the lower third of the rear glass. Pull upward gently to create a small gap between the glass and the body.
- 4
Slice Perimeter Adhesive
5 minInsert an opening pick into the gap created by the suction cup. Slide the pick around all four edges to slice through the adhesive seal.
- 5
Lift and Remove Rear Glass
2 minCarefully lift the rear glass off the frame. Use a plastic spudger to disconnect the fingerprint sensor cable attached to the interior if necessary.
- 6
Unscrew Midframe Fasteners
4 minUse a Phillips #00 screwdriver to remove the ten 4.0 mm screws securing the midframe and wireless charging pad.
- 7
Remove Wireless Charging Midframe
2 minInsert a plastic spudger under the edge of the plastic midframe shield and gently pry it up and out of the phone chassis.
- 8
Disconnect the Battery Cable
1 minLocate the battery flex connector on the right side of the motherboard. Pry it straight up with a plastic spudger to disconnect power immediately.
- 9
Disconnect Camera and Display Flex Cables
3 minUse your spudger to unclip the front camera, rear dual-camera module, and main display flex connectors from the motherboard.
- 10
Lift Out the Motherboard
2 minGently lift the top edge of the motherboard and tilt it up to clear the frame, then remove it completely from the phone.
- 11
Inspect Components for Corrosion
3 minExamine the motherboard, flex connectors, and housing under good lighting for white or green mineral corrosion deposits.
- 12
Scrub the Motherboard with Isopropyl Alcohol
10 minSubmerge or heavily soak the motherboard in 99% isopropyl alcohol. Use a soft brush to gently scrub away all visible corrosion from components and connectors.
- 13
Clean Connectors and Internal Chassis
8 minDip a brush or cotton swab into 99% isopropyl alcohol and scrub liquid residue from the internal frame, speaker assembly, and daughterboard.
- 14
Dry Components Completely
15 minUse compressed air to blow liquid out from beneath surface-mount components, then allow all parts to air-dry for at least 30 minutes.
- 15
Reinstall Motherboard and Connectors
4 minPlace the motherboard back into the frame, aligning the ports, then reconnect the display, camera, and battery flex cables securely.
- 16
Reassemble Midframe and Seal Back Glass
6 minSnap the wireless charging midframe back into place, install the ten Phillips screws, apply new perimeter adhesive, and press the rear glass down firmly.
After your LG V30 water damage repair
Power the V30 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 V30 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 V30 repair context in the encyclopedia, or open related DIY guides.

