Phone · Google · Pixel 3a XL
Google Pixel 3a XL Logic Board Repair
Logic Board Repair guide for the Google Pixel 3a XL
Before you begin
Tools
- T3 Torx screwdriver
- Heat gun or iOpener
- Suction cup
- Plastic opening picks
- Plastic spudger
- Tweezers
- Soldering iron
- Magnifying lamp
Parts / materials
- Isopropyl alcohol (99%)
- Liquid solder flux
- Desoldering braid
- Pre-cut display adhesive strips
Safety
- Wear ESD grounding protection to prevent electro-static discharge to sensitive board micro-controllers.
- Wear eye protection when soldering or using heating elements.
- Operate in a well-ventilated space to avoid inhaling flux fumes.
Overview
Step-by-step
- 1
Heat the Display Edges
3 minUse a heat gun or heated pad to warm the perimeter of the screen for about 2 minutes to soften the adhesive. Avoid overheating to prevent LCD damage.
- 2
Apply Suction Cup
2 minAttach a suction cup near the bottom edge of the screen glass. Pull upward gently to form a slight gap between the display rim and the phone frame.
- 3
Slice Display Adhesive
6 minInsert an opening pick into the gap and slice along all four edges of the screen. Do not insert the pick deeper than 3mm to avoid tearing delicate flex cables.
- 4
Pivot Open the Screen
2 minLift the top edge of the display module up and away from the frame like a book. Keep the screen resting near the bottom edge so the flex cable remains unstrained.
- 5
Unscrew Display Cable Shield
2 minUse a T3 Torx screwdriver to remove the screw securing the metal display connector shield. Store the screw safely for reassembly.
- 6
Disconnect Display Cable
1 minPry the display flex connector straight up from its motherboard socket using a plastic spudger. Set the detached display assembly aside.
- 7
Unscrew Midframe Shield
5 minRemove all T3 Torx screws securing the internal midframe to the phone chassis. Keep track of screw positions as sizes may vary slightly.
- 8
Remove Internal Midframe
3 minGently pry up and remove the metal midframe plate using a plastic opening tool. Ensure no hidden clips or cables catch on the midframe edges.
- 9
Disconnect Battery Cable
1 minDisconnect the battery press connector from the logic board using the flat edge of a spudger. This cuts power to the board to prevent accidental electrical shorts.
- 10
Disconnect Auxiliary Cable Connections
4 minDisconnect the front camera, rear camera, speaker, and charging port flex cables from the logic board. Lift out the camera modules if they hinder board removal.
- 11
Remove Logic Board Retaining Screws
3 minUnscrew the T3 Torx screws holding the logic board to the enclosure. Inspect the edges for small grounding brackets.
- 12
Extract the Logic Board
2 minGrasp the logic board carefully by its edges and lift it straight out of the phone casing. Ensure no coaxial antenna cables remain hooked to the underside.
- 13
Apply Solder Flux to Target Component
4 minInspect the logic board under a magnifying lens and apply a small drop of solder flux to the damaged component pins or micro-joints.
- 14
Reflow micro-solder Joints
10 minUse a fine-tip soldering iron or hot air rework pencil to carefully touch up the affected solder pads. Allow the logic board to cool completely before testing.
After your Google Pixel 3a XL logic board repair
Power the Pixel 3a XL 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 XL 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 XL repair context in the encyclopedia, or open related DIY guides.
