Phone · Samsung · Galaxy S9 Plus
Samsung Galaxy S9 Plus Logic Board Repair
Logic Board Repair guide for the Samsung Galaxy S9 Plus
Before you begin
Tools
- Phillips #00 screwdriver
- Plastic opening picks
- Plastic spudger
- Suction cup
- Heat gun or iOpener
- Soldering iron
- Magnifying glass
- Anti-static wrist strap
Parts / materials
- Flux
- Desoldering braid
- Isopropyl alcohol (90%+)
- Replacement back glass adhesive
Safety
- Wear safety glasses while applying heat to prevent injury from glass fragments.
- Attach an anti-static wrist strap to avoid electrostatic discharge damage to components.
- Do not bend or puncture the lithium-ion battery during disassembly.
Overview
Step-by-step
- 1
Eject the SIM card tray
1 minInsert a SIM eject tool or paperclip into the hole at the top of the phone to remove the SIM and microSD card tray.
- 2
Heat the rear glass panel
3 minApply a heated iOpener or heat gun around the perimeter of the back glass for two minutes to soften the adhesive seal.
- 3
Attach a suction cup
2 minPlace a suction cup on the lower half of the rear glass and pull upward firmly to create a small gap.
- 4
Slice perimeter adhesive
4 minInsert an opening pick into the gap and slide it along the bottom and side edges to cut through the adhesive.
- 5
Disconnect fingerprint sensor
2 minGently swing the back cover open to the right and use a plastic spudger to disconnect the fingerprint sensor cable.
- 6
Remove the back glass
1 minLift the rear glass panel clear of the phone and set it aside on a clean surface.
- 7
Unscrew the upper antenna bracket
4 minRemove the fifteen Phillips #00 screws securing the midframe and wireless charging coil assembly.
- 8
Remove wireless charging assembly
2 minGently pry up and remove the wireless charging pad and attached plastic midframe.
- 9
Disconnect the battery cable
1 minUse a plastic opening tool to lift the battery connector straight up from its socket on the logic board.
- 10
Disconnect front cameras
2 minPry up the press connectors for the front-facing camera and the iris scanner array.
- 11
Disconnect display and sub-board cables
3 minDetach the main display flex cable, touch sensor cable, and lower sub-board interconnect cable from the logic board.
- 12
Remove logic board retaining screw
1 minUnscrew the single Phillips #00 screw securing the lower section of the logic board to the frame.
- 13
Lift and remove the logic board
2 minCarefully pivot the bottom edge of the logic board up and extract the motherboard from the chassis.
- 14
Inspect and reflow damaged circuits
12 minExamine the board under magnification and apply flux and a soldering iron to repair bridged or damaged trace joints.
After your Samsung Galaxy S9 Plus logic board repair
Power the Galaxy S9 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 S9 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 S9 Plus repair context in the encyclopedia, or open related DIY guides.
