Phone · Samsung · Galaxy Fold 4G
Samsung Galaxy Fold 4G Water Damage Repair
Water Damage Repair guide for the Samsung Galaxy Fold 4G
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Prying spudger
- Tweezers
- Heat gun or hairdryer
- Suction handle
- Soft bristle toothbrush
Parts / materials
- 99% Isopropyl alcohol
- Lint-free microfiber cloths
- Pre-cut adhesive strips
Safety
- Wear eye protection when handling isopropyl alcohol and compressed air.
- Ensure the device is powered off and disconnect the battery immediately to prevent short circuits.
- Work in a well-ventilated area away from open flames.
Overview
Step-by-step
- 1
Power off the device
1 minTurn off the Galaxy Fold 4G immediately to prevent further electrical shorting.
- 2
Remove SIM card tray
1 minInsert a SIM eject tool into the hole near the SIM tray and remove the card holder.
- 3
Heat the rear glass covers
3 minApply heat to the top and bottom rear glass panels using a heat gun for 2 minutes to soften the adhesive.
- 4
Slice rear glass adhesive
5 minApply a suction cup to the lower rear cover and insert an opening pick under the edge to slice the adhesive.
- 5
Remove both rear glass panels
4 minCarefully lift the upper and lower back glass covers off the frame using plastic opening tools.
- 6
Unbolt midframe protective covers
5 minRemove the Phillips screws securing the plastic wireless charging coil and motherboard bracket.
- 7
Disconnect main and secondary batteries
2 minUse a plastic spudger to pry up both battery press connectors from the mainboard and sub-board.
- 8
Unplug interconnect cables and displays
4 minDisconnect the display flex cables, ribbon connectors, and antenna cables attached to the motherboard.
- 9
Unbolt and extract motherboard
3 minRemove the remaining screws securing the mainboard and carefully lift it out of the chassis.
- 10
Remove daughterboard and speaker module
4 minUnbolt and detach the lower daughterboard, speaker assembly, and USB-C port housing.
- 11
Scrub circuit boards with isopropyl alcohol
10 minSubmerge the removed motherboard and sub-boards in 99% isopropyl alcohol and scrub corrosion gently using a soft toothbrush.
- 12
Dry internal components completely
15 minBlow away liquid residues with gentle compressed air and let all circuit boards air dry completely.
- 13
Clean interior frame chassis
5 minWipe down remaining moisture and residual mineral deposits inside the phone frame using a microfiber cloth soaked in alcohol.
- 14
Reinstall mainboard and daughterboard
5 minPlace the thoroughly dried circuit boards back into position and secure them with their original screws.
- 15
Reconnect flex cables and batteries
4 minSnap all ribbon connectors, display flexes, and the battery press connectors firmly back onto the boards.
- 16
Secure midframe and apply new adhesive
8 minReattach the wireless charging bracket, screw it down, and apply fresh adhesive strips before pressing the rear glass covers into place.
After your Samsung Galaxy Fold 4G water damage repair
Power the Galaxy Fold 4G 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 Fold 4G job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Prefer a professional repair?
Book Samsung Galaxy Fold 4G water damage repair at LML Repair in Seattle — same-day options available.
