Phone · Motorola · G55 5G
Motorola G55 5G Logic Board Repair
Logic Board Repair guide for the Motorola G55 5G
Before you begin
Tools
- Precision Phillips screwdriver
- Plastic opening picks
- Heat gun
- Anti-static wrist strap
- Precision tweezers
- Magnifying glass or headlamp
- Soldering iron
- Desoldering braid
- Spudger
Parts / materials
- Isopropyl alcohol (99%)
- Liquid soldering flux
- Lead-free solder wire
- Replacement back cover adhesive
Safety
- Wear safety glasses when heating the cover and using molten solder.
- Disconnect the battery immediately after opening the device to prevent electrical shorts.
- Work in a well-ventilated area to avoid inhaling soldering fumes.
- Wear an anti-static wrist strap to protect delicate microchips from ESD damage.
Overview
Step-by-step
- 1
Turn Off Device
1 minPress and hold the power button, then select power off to shut down the phone completely.
- 2
Remove SIM Tray
1 minInsert a SIM ejector tool into the hole on the left side of the frame and pull the SIM tray out.
- 3
Heat Back Cover
2 minUse a heat gun on low power to warm the outer edges of the back panel for about two minutes.
- 4
Slice Rear Adhesive
3 minInsert a plastic opening pick under the lower edge of the back panel and slice carefully around the perimeter.
- 5
Remove Back Cover
2 minGently lift the rear panel off the frame, using tweezers to detach any remaining adhesive strings.
- 6
Unscrew Motherboard Shield
3 minRemove the Phillips screws securing the plastic motherboard protective bracket to the inner frame.
- 7
Remove Motherboard Shield
1 minPry up the edges of the plastic motherboard shield with a spudger and remove it from the device.
- 8
Disconnect Battery Cable
1 minPry the battery press-fit connector straight up from the motherboard using a plastic spudger.
- 9
Disconnect Display Cable
1 minUse a plastic opening tool to unclip the main display flex cable connector from the board.
- 10
Disconnect Antenna Cable
1 minCarefully pop the coaxial antenna cable connector up off its socket on the edge of the logic board.
- 11
Remove Rear Cameras
2 minUnclip the camera ribbon connectors and lift the camera module assembly off the motherboard.
- 12
Unscrew Logic Board
1 minRemove the single Phillips screw anchoring the logic board to the internal chassis.
- 13
Extract Logic Board
2 minGently tilt the logic board up by its top edge and lift it out of the phone body.
- 14
Clean Affected Components
3 minApply isopropyl alcohol with a cotton swab to clean flux residue or corrosion off the board pads.
- 15
Micro-Solder Faulty Component
15 minApply liquid flux and use a fine-tip soldering iron with desoldering braid to replace damaged SMD parts.
- 16
Reinstall Logic Board
2 minAlign the repaired logic board into the chassis and press it gently down into position.
After your Motorola G55 5G logic board repair
Power the G55 5G 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 Motorola G55 5G job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Motorola G55 5G repair context in the encyclopedia, or open related DIY guides.
