Phone · Apple · iPhone 5
Apple iPhone 5 Logic Board Repair
Logic Board Repair guide for the Apple iPhone 5
Before you begin
Tools
- P2 Pentalobe screwdriver
- Phillips #000 screwdriver
- Suction cup
- Plastic spudger
- Precision tweezers
- SIM eject tool
- Soldering iron
- Magnifying visor or headlamp
Parts / materials
- 99% Isopropyl alcohol
- Liquid flux
- Rosin-core fine solder wire
- Desoldering wick
Safety
- Wear safety glasses to protect eyes from heated solder splatter.
- Connect an anti-static wrist strap to a grounded surface before handling the internal components.
- Ensure the workspace is well-ventilated to avoid inhaling solder fumes.
Overview
Step-by-step
- 1
Power Down iPhone
1 minPress and hold the sleep/wake button on top of the phone, then slide the screen toggle to power off completely.
- 2
Remove Pentalobe Screws
2 minUnscrew the two 3.6 mm P2 Pentalobe screws located on either side of the Lightning charging port.
- 3
Lift Front Panel
3 minAttach a suction cup above the home button and gently pull upward while prying the bottom glass frame with a plastic tool.
- 4
Remove Display Cable Bracket
2 minUnscrew the three Phillips screws securing the metal display cable bracket to the top right of the logic board and lift it out.
- 5
Disconnect Display Cables
3 minUse a plastic spudger to pry up the front camera, digitizer, and LCD connector cables from their board sockets.
- 6
Disconnect Battery Cable
2 minRemove the two Phillips screws securing the battery connector bracket, then pop the battery connector off the logic board.
- 7
Eject SIM Card Tray
1 minInsert a SIM eject tool or paperclip into the hole on the right side of the device to pop out and remove the SIM tray.
- 8
Disconnect Dock Flex Cables
3 minDisconnect the lower dock connector flex cable, volume button flex, and antenna coaxial cable from the lower portion of the logic board.
- 9
Remove Rear Camera
3 minUnscrew the camera grounding bracket, disconnect the rear camera flex cable, and lift the camera module out of the housing.
- 10
Remove Logic Board Screws
4 minUnscrew the five internal logic board mounting screws, taking note of the top standoff screw near the headphone jack area.
- 11
Lift Logic Board Out
3 minCarefully tilt the top of the logic board up and lift it away from the rear case, making sure no loose cables get caught.
- 12
Apply Liquid Flux
2 minPlace the board under a magnifying lamp and apply a small drop of liquid flux directly to the damaged solder joint or trace.
- 13
Resolder Board Component
8 minTouch the preheated fine-tip soldering iron to the joint to reflow or solder the damaged component in place.
- 14
Clean Logic Board
3 minDampen a lint-free swab with 99% isopropyl alcohol and gently clean away any remaining flux residue from the board.
After your Apple iPhone 5 logic board repair
Power the iPhone 5 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 Apple iPhone 5 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Apple iPhone 5 repair context in the encyclopedia, or open related DIY guides.
