Phone · Google · Pixel 7A
Google Pixel 7A Titan Security Chip Repair
Titan Security Chip Repair guide for the Google Pixel 7A
Before you begin
Tools
- Hot air station
- Soldering iron
- Precision screwdriver set (T3 Torx)
- Plastic opening picks
- Spudger
- Micro-tweezers
- Desoldering wick
- SIM eject tool
Parts / materials
- Replacement Titan M2 Security Chip
- Isopropyl alcohol (99%)
- Liquid solder flux
- Kapton heat-resistant tape
- Pre-cut back panel adhesive
Safety
- Wear safety glasses while using hot air tools and soldering equipment.
- Perform soldering in a well-ventilated space to avoid inhaling chemical fumes.
- Disconnect the battery before attempting any board-level heat work.
- Use an anti-static wrist strap to avoid electrostatic damage to integrated circuits.
Overview
Step-by-step
- 1
Eject the SIM tray
1 minInsert a SIM eject tool into the pinhole on the side of the device. Push firmly to eject the SIM tray and remove it.
- 2
Heat the back glass
3 minApply hot air around the edges of the rear panel for two minutes to soften the underlying adhesive.
- 3
Slice the rear adhesive
4 minInsert a thin plastic opening pick along the lower seam and slice around all perimeter edges.
- 4
Remove the back panel
2 minGently lift the back panel off the chassis and set it aside.
- 5
Unscrew the midframe cover
4 minRemove the T3 Torx screws securing the midframe panel and graphite heat shield to the body.
- 6
Lift out the midframe
2 minPry up and remove the midframe cover to expose the motherboard and battery connection.
- 7
Disconnect the battery
1 minUse a plastic spudger to pry the battery press connector straight up off the motherboard socket.
- 8
Disconnect board flex cables
3 minDetach the display, rear camera, front camera, and interconnect ribbon cables from the motherboard.
- 9
Remove motherboard screws
3 minUnscrew the remaining T3 Torx screws fastening the mainboard to the phone frame.
- 10
Remove the mainboard
2 minCarefully pry the motherboard out of the housing and place it on an anti-static work mat.
- 11
Apply Kapton tape shielding
3 minPlace heat-resistant Kapton tape around the Titan security chip to shield adjacent components from heat.
- 12
Apply solder flux
2 minDispense a small amount of liquid rosin flux around the edges of the Titan chip.
- 13
Desolder the Titan chip
4 minHeat the chip with a hot air station set to 350°C until the solder joints reflow.
- 14
Lift the Titan chip
2 minUse fine micro-tweezers to lift the desoldered Titan chip vertically off the motherboard.
- 15
Clean the board pads
5 minClean leftover solder from the PCB pads using a soldering iron, desoldering wick, and 99% isopropyl alcohol.
- 16
Position the replacement chip
3 minApply fresh flux to the pads and align the replacement Titan chip according to orientation pin-1 markers.
- 17
Reflow the new chip
4 minHeat the replacement chip evenly with hot air until it reflows and self-aligns onto the solder pads.
- 18
Reinstall the motherboard
4 minPlace the cooled motherboard back into the chassis and reconnect all display and sensor flex cables.
- 19
Reassemble and seal frame
5 minReconnect the battery, secure the midframe with T3 screws, and press the back panel onto new adhesive strips.
After your Google Pixel 7A titan security chip repair
Power the Pixel 7A back on and test the titan security chip 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 7A 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 7A repair context in the encyclopedia, or open related DIY guides.
