Phone · Samsung · Galaxy S8 Plus
Samsung Galaxy S8 Plus Logic Board Repair
Logic Board Repair guide for the Samsung Galaxy S8 Plus
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Phillips #000 screwdriver
- Spudger tool
- Tweezers
- SIM card eject tool
Parts / materials
- Pre-cut rear glass adhesive strip
- Isopropyl alcohol (99%)
- Thermal paste
Safety
- Wear eye protection when heating glass panels to prevent injury from cracked glass.
- Disconnect the battery before touching logic board components to prevent electrical shorts.
- Do not puncture or bend the lithium-ion battery during disassembly.
Overview
Step-by-step
- 1
Heat the rear glass
3 minApply a heat gun around the outer edges of the rear glass for 2 to 3 minutes to soften the factory adhesive.
- 2
Attach suction cup
1 minPlace a suction cup near the bottom edge of the back glass and pull upward firmly to create a small gap.
- 3
Insert opening pick
2 minInsert a plastic opening pick into the seam between the glass back and the frame.
- 4
Slice rear glass adhesive
4 minSlide the opening pick around the perimeter of the rear glass to slice through all adhesive bonds.
- 5
Disconnect fingerprint sensor cable
2 minSlightly lift the rear glass and use a spudger to detach the short fingerprint sensor flex cable.
- 6
Remove rear glass cover
1 minLift the rear glass completely off the chassis and set it aside on a soft surface.
- 7
Unscrew wireless charging assembly
3 minRemove the eleven Phillips #000 screws securing the upper shield and wireless charging coil.
- 8
Remove wireless charging coil
2 minGently pry up the edges of the wireless charging pad and lift the assembly out of the phone.
- 9
Unscrew loudspeaker enclosure
2 minRemove the five Phillips #000 screws securing the bottom loudspeaker module.
- 10
Remove loudspeaker module
2 minInsert a spudger under the speaker assembly and pry it up from the bottom of the frame.
- 11
Disconnect battery press connector
1 minPry the battery connector straight up from the motherboard using a plastic spudger to cut power.
- 12
Eject SIM card tray
1 minInsert a SIM eject tool into the hole at the top edge of the device and pull out the card tray.
- 13
Disconnect board flex connectors
3 minDisconnect the display, front camera, iris scanner, and headphone jack connectors from the motherboard.
- 14
Unscrew motherboard retaining screw
1 minRemove the single Phillips #000 screw holding the motherboard to the upper corner of the chassis.
- 15
Lift out logic board
3 minCarefully tilt the logic board up from the bottom end and lift it completely out of the frame.
After your Samsung Galaxy S8 Plus logic board repair
Power the Galaxy S8 Plus 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 S8 Plus 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 S8 Plus repair context in the encyclopedia, or open related DIY guides.
