Phone · Samsung · Galaxy S7
Samsung Galaxy S7 Logic Board Repair
Logic Board Repair guide for the Samsung Galaxy S7
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Opening picks
- Phillips #000 screwdriver
- Spudger tool
- Tweezers
- SIM eject tool
Parts / materials
- Replacement back cover adhesive precut tape
- Isopropyl alcohol (99%)
- Lint-free microfiber cloth
- Thermal paste
Safety
- Wear safety glasses to protect your eyes if the glass back shatters during heating.
- Always disconnect the battery before handling motherboard components to prevent short circuits.
- Do not puncture or bend the lithium-ion battery with sharp tools.
Overview
Step-by-step
- 1
Power Off Phone
1 minTurn off your Galaxy S7 completely to prevent electrical short circuits during the repair.
- 2
Eject SIM Card Tray
1 minInsert a SIM eject tool or pin into the top edge hole to remove the SIM and microSD tray.
- 3
Heat Rear Glass
3 minApply a heat gun or hairdryer along the back panel edges for two minutes to soften the adhesive.
- 4
Attach Suction Cup
2 minPlace a suction cup near the bottom edge of the glass back cover and pull upward firmly to create a gap.
- 5
Insert Plastic Pick
2 minSlide a thin plastic opening pick into the seam between the glass and the phone frame.
- 6
Slice Rear Adhesive
5 minCarefully slide the opening pick around all four edges to separate the adhesive securing the back cover.
- 7
Lift Off Back Cover
2 minGently pull the rear glass panel away from the frame and clear away any leftover adhesive strips.
- 8
Unscrew Midframe Screws
4 minUse a Phillips #000 screwdriver to remove the 12 screws holding the internal midframe modules.
- 9
Remove Upper Wireless Coil
2 minPry up and detach the top antenna shield and wireless charging pad from the frame.
- 10
Remove Speaker Assembly
2 minUse a spudger to pry up and remove the bottom loudspeaker housing.
- 11
Disconnect Battery Cable
1 minPry the battery connector straight up from the logic board to kill all power to the system.
- 12
Disconnect Display Cable
1 minUnclip the main display flex cable press-connector located near the right side of the board.
- 13
Disconnect Front Camera
1 minPop the front-facing camera ribbon connector off its motherboard socket using a plastic spudger.
- 14
Disconnect Earpiece Speaker Cable
1 minDisconnect the earpiece speaker module connector near the top center of the logic board.
- 15
Disconnect Lower Daughterboard Cables
3 minDisconnect the bottom daughterboard connector and two antenna coaxial cables from the base of the board.
- 16
Pry Up Logic Board
2 minGently insert a spudger beneath the top edge of the logic board and leverage it slightly upward.
- 17
Remove Logic Board
2 minCarefully lift the logic board out of the phone chassis, ensuring no stray flex cables get caught.
After your Samsung Galaxy S7 logic board repair
Power the Galaxy S7 back on and test the logic board 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 S7 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 S7 repair context in the encyclopedia, or open related DIY guides.
