Phone · Samsung · Galaxy Note 3
Samsung Galaxy Note 3 Logic Board Repair
Logic Board Repair guide for the Samsung Galaxy Note 3
Before you begin
Tools
- Phillips #00 screwdriver
- Plastic opening tools
- Spudger
- Tweezers
- Anti-static wrist strap
- Magnifying glass or headlamp
- Soldering iron
Parts / materials
- Flux
- Desoldering braid
- 99% Isopropyl alcohol
Safety
- Wear a grounded anti-static wrist strap to prevent electrostatic discharge from damaging sensitive microchips.
- Ensure the battery is completely removed before using metal tools or soldering equipment on internal circuitry.
- Work in a well-ventilated area to avoid inhaling harmful solder and flux fumes.
Overview
Step-by-step
- 1
Remove the S Pen
1 minPress in and pull the S Pen out from its slot at the bottom right corner of the phone.
- 2
Pry Off Rear Cover
1 minInsert a plastic opening tool into the fingernail notch near the power button and gently lift the cover away from the chassis.
- 3
Remove the Battery
1 minLift the battery from the notch at the bottom of the battery compartment and set it aside.
- 4
Remove SIM and MicroSD Cards
1 minPush the MicroSD and SIM cards inward slightly until they click, then slide them out from their stacked slot.
- 5
Unscrew Midframe Screws
3 minUse a Phillips #00 screwdriver to remove the 12 black screws securing the midframe to the display assembly.
- 6
Unclip Midframe Assembly
2 minInsert a plastic opening pick between the chrome bezel and the midframe assembly, working around the perimeter to release the plastic clips.
- 7
Disconnect Display Flex Cables
2 minUse the flat end of a spudger to pry straight up on the display and digitizer press connectors.
- 8
Disconnect Front Camera Assembly
1 minGently pop up the flex cable connector for the front-facing camera and sensor array using a spudger.
- 9
Disconnect Earpiece and Sensor Cable
1 minDisconnect the flex cable press connector that links the earpiece speaker and proximity sensor to the upper logic board.
- 10
Disconnect Antenna Cables
2 minUse fine tweezers to carefully unclip the red and white coaxial antenna cables from their surface-mount connectors on the board.
- 11
Disconnect Lower Daughterboard Cable
1 minPry up the flex connector near the bottom of the board that interfaces with the charging port assembly.
- 12
Remove Motherboard Retaining Screw
1 minRemove the single black Phillips #00 screw securing the top portion of the logic board to the frame.
- 13
Lift Motherboard Out
2 minGrasp the logic board by the top edges and carefully lift it out of the screen enclosure, ensuring no remaining flex cables snag.
- 14
Clean and Repair Board Contacts
10 minInspect damaged components under a magnifying glass, apply liquid flux, and re-solder or reflow cold solder joints using a fine-tip soldering iron.
After your Samsung Galaxy Note 3 logic board repair
Power the Galaxy Note 3 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 Note 3 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 Note 3 repair context in the encyclopedia, or open related DIY guides.
