Phone · Google · Pixel 4a
Google Pixel 4a Logic Board Repair
Logic Board Repair guide for the Google Pixel 4a
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Spudger tool
- Tweezers
- T3 Torx screwdriver
- SIM eject tool
Parts / materials
- Replacement screen adhesive strips
- Isopropyl alcohol (99%)
- Thermal paste or pad
Safety
- Wear safety glasses to protect eyes from potential glass splinters.
- Disconnect the battery before handling interior components to prevent electrical shorts.
- Do not puncture or bend the lithium-ion battery.
- Use an anti-static wrist strap to avoid ESD damage to sensitive microchips.
Overview
Step-by-step
- 1
Power Off Device
1 minPress and hold the power button, then tap Power Off on the screen. Ensure the device is completely powered down before proceeding.
- 2
Remove SIM Tray
1 minInsert a SIM eject tool or paperclip into the hole next to the SIM tray. Push firmly to eject the tray and set it aside.
- 3
Heat Display Edges
2 minApply a heat gun set to low or a hair dryer to the edges of the screen for two minutes to soften the display adhesive.
- 4
Apply Suction Cup
1 minPlace a suction cup onto the lower portion of the glass screen. Press down firmly to secure a tight seal against the surface.
- 5
Slice Screen Adhesive
5 minPull up on the suction cup to create a small gap and insert a plastic prying pick. Slide the pick around the perimeter to cut through the adhesive.
- 6
Open Display Assembly
2 minGently swing the display open from the left side like a book cover. Do not pull the screen away entirely, as it is still connected by delicate cables.
- 7
Disconnect Display Cable
2 minUse a plastic spudger to pry open the metal retaining bracket and disconnect the screen flex cable from the main board.
- 8
Unscrew Midframe Fasteners
4 minRemove the T3 Torx screws securing the midframe panel to the phone body. Keep track of all removed screws for reassembly.
- 9
Remove Plastic Midframe
2 minUse a spudger to gently pry up the plastic midframe shield from the edges. Lift it out of the chassis and set it aside.
- 10
Disconnect Battery Cable
1 minInsert the flat end of a spudger under the battery connector to disconnect it from the logic board. This prevents short circuits during repair.
- 11
Disconnect Camera Cables
2 minDisconnect the front-facing and rear camera ribbon cables from their sockets on the logic board using a plastic spudger.
- 12
Disconnect Antenna Cables
2 minUse precision tweezers to carefully pop the coaxial antenna cables off their connectors on the logic board.
- 13
Remove Logic Board Screws
3 minRemove the remaining T3 Torx screws securing the logic board to the inner enclosure.
- 14
Lift Out Logic Board
3 minGently pry up the logic board from the bottom edge using a spudger. Lift the board clear of the chassis for repair or replacement.
After your Google Pixel 4a logic board repair
Power the Pixel 4a 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 Google Pixel 4a job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Google Pixel 4a repair context in the encyclopedia, or open related DIY guides.
