Phone · Google · Pixel 3a
Google Pixel 3a Logic Board Repair
Logic Board Repair guide for the Google Pixel 3a
Before you begin
Tools
- T3 Torx screwdriver
- Heat gun or iOpener
- Opening picks
- Spudger
- Tweezers
- Soldering iron
- Magnifying glass or headlamp
- Anti-static wrist strap
Parts / materials
- Isopropyl alcohol (99%)
- Flux
- Desoldering braid
- Pre-cut display adhesive strips
Safety
- Wear eye protection when soldering and handling glass components.
- Wear an anti-static wrist strap to protect sensitive logic board ICs from ESD.
- Work in a well-ventilated area when heating adhesive and applying flux.
Overview
Step-by-step
- 1
Warm the display edges
3 minApply heat to the perimeter of the screen using a heat gun for 2 minutes to soften the underlying foam adhesive.
- 2
Slice display adhesive
5 minInsert a thin opening pick under the top glass edge and carefully slide it around the perimeter to cut the adhesive.
- 3
Open the display
2 minGently lift the top edge of the display assembly and swing it down like a book cover.
- 4
Unscrew display connector bracket
3 minUse a T3 Torx driver to remove the two screws securing the metal display cable shield.
- 5
Disconnect display ribbon cable
2 minUse the flat end of a plastic spudger to pry the display connector straight up from its socket.
- 6
Remove midframe screws
5 minUnscrew the T3 Torx screws holding the plastic midframe and internal shield structure in place.
- 7
Lift out midframe
3 minPry up along the edges of the midframe with an opening tool and lift it out of the body.
- 8
Disconnect battery cable
2 minDisconnect the battery flex cable from the main motherboard using a plastic spudger to cut power.
- 9
Disconnect camera cables
3 minPry up the press-fit ribbon cable connectors for both the front and rear camera modules.
- 10
Disconnect secondary flex cables
4 minUnplug the charging port flex cable, headphone jack flex, and antenna coax cables from the board.
- 11
Remove logic board screws
3 minRemove the T3 Torx screws holding the motherboard firmly inside the aluminum chassis.
- 12
Pry up logic board
3 minInsert a spudger under the bottom edge of the motherboard and lift it gently out of the rear case.
- 13
Inspect for board damage
10 minExamine the surface-mount components and traces under a magnifying glass for corrosion, burnt components, or cracked solder.
- 14
Reflow damaged solder joints
12 minApply liquid flux to affected component pads and carefully touch-up solder joints using a fine soldering iron tip.
- 15
Clean logic board
4 minClean away leftover flux residue and debris using 99% isopropyl alcohol and a small lint-free swab.
- 16
Reinstall logic board
4 minPlace the logic board back into the rear case, aligning the ports, and secure it with the T3 Torx screws.
After your Google Pixel 3a logic board repair
Power the Pixel 3a 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 3a 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 3a repair context in the encyclopedia, or open related DIY guides.
