Phone · Motorola · G50 5G
Motorola G50 5G Logic Board Repair
Logic Board Repair guide for the Motorola G50 5G
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Anti-static wrist strap
- Tweezers
- Magnifying glass or headlamp
- Soldering iron
- Heat gun or hair dryer
- SIM card eject tool
Parts / materials
- 99% Isopropyl alcohol
- Desoldering braid
- Flux
- Pre-cut rear cover adhesive strips
Safety
- Wear an anti-static wrist strap to prevent ESD damage to delicate board ICs.
- Always disconnect the battery before touching or soldering board components.
- Work in a well-ventilated space when heating flux or solder.
- Wear protective safety glasses during soldering and desoldering.
Overview
Step-by-step
- 1
Power off the phone
1 minPress and hold the power button, then tap Power Off to ensure the device is completely shut down.
- 2
Eject the SIM tray
1 minInsert a SIM eject tool into the hole beside the SIM tray and press firmly to pop it out.
- 3
Heat the rear cover
3 minApply a heat gun or heating pad to the perimeter of the back cover for two minutes to soften the adhesive.
- 4
Slice perimeter adhesive
4 minInsert a thin plastic opening pick under the lower edge and slide it around the perimeter to sever the glue.
- 5
Pry open the back cover
2 minCarefully pivot the back cover open from the right edge, taking care not to strain the fingerprint sensor cable.
- 6
Disconnect fingerprint sensor
1 minUse a plastic spudger to pop the fingerprint sensor ribbon connector straight up off the motherboard.
- 7
Unscrew the upper motherboard shield
3 minRemove the Phillips screws securing the plastic motherboard frame bracket.
- 8
Remove upper frame bracket
2 minPry up and remove the plastic motherboard shield to access the internal connectors.
- 9
Disconnect the battery
1 minLever the battery cable connector up from the logic board to eliminate power to the circuits.
- 10
Disconnect display flex cable
1 minUse the edge of a spudger to detach the main display ribbon cable connector.
- 11
Disconnect interconnect ribbon cable
1 minDetach the motherboard-to-sub-board interconnect cable connector from the logic board.
- 12
Disconnect antenna coax cables
2 minGently pry up the antenna coaxial connectors from the edge of the logic board using fine tweezers.
- 13
Disconnect front and rear cameras
2 minUnplug the front-facing camera and rear camera module press connectors from the logic board.
- 14
Remove logic board retaining screws
1 minUnscrew the single Phillips screw holding the logic board down to the chassis.
- 15
Lift out the logic board
2 minCarefully pry the logic board up from the top edge and remove it from the phone frame.
- 16
Inspect and rework logic board
15 minClean any corrosion with isopropyl alcohol and use liquid flux with a soldering iron to touch up damaged solder joints.
- 17
Reinstall the logic board
2 minSet the repaired logic board back into the chassis and secure it with the single retaining screw.
- 18
Reconnect camera modules and antennas
3 minSnap the camera flex cables back into place and reattach the coaxial antenna leads securely.
- 19
Reconnect ribbon cables and battery
2 minPress the display flex, interconnect cable, and battery connector onto their respective logic board sockets.
- 20
Reattach upper shield and rear cover
4 minScrew down the motherboard cover bracket, reconnect the fingerprint sensor, and press the rear cover down onto new adhesive.
After your Motorola G50 5G logic board repair
Power the G50 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 G50 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 G50 5G repair context in the encyclopedia, or open related DIY guides.
