Phone · Motorola · G50
Motorola G50 Logic Board Repair
Logic Board Repair guide for the Motorola G50
Before you begin
Tools
- Phillips #00 screwdriver
- Plastic spudger
- Opening picks
- SIM eject tool
- Heat gun or iOpener
- Precision tweezers
- Soldering iron
Parts / materials
- Replacement back cover adhesive strips
- 99% Isopropyl alcohol
- Flux core solder
- Desoldering braid
Safety
- Wear an anti-static ESD wrist strap to prevent electrostatic discharge damage to delicate microchips.
- Work in a well-ventilated space to avoid inhaling toxic fumes generated while soldering or using flux.
- Do not puncture or apply direct heat to the lithium-ion battery during disassembly.
Overview
Step-by-step
- 1
Power Down the Device
1 minPress and hold the power button, then select Power Off on the display. Ensure the device is fully powered down before proceeding.
- 2
Remove the SIM Card Tray
1 minInsert a SIM eject pin into the tray hole on the left edge of the phone. Push firmly inward to eject the tray and pull it out.
- 3
Warm the Rear Cover Adhesive
2 minApply a heating pad or hair dryer to the back cover perimeter for two minutes to soften the internal adhesive.
- 4
Slice the Back Cover Seal
4 minInsert an opening pick into the seam between the rear glass cover and the frame. Slide it carefully around the edges to release the glue.
- 5
Disconnect the Fingerprint Sensor Cable
2 minCarefully hinge the rear cover to the side. Use a plastic spudger to detach the fingerprint reader ribbon cable from the mainboard.
- 6
Remove Upper Frame Screws
3 minUnscrew the 11 Phillips #00 screws holding the upper plastic mainboard protective shield in place.
- 7
Detach the Upper Motherboard Shield
2 minInsert a spudger under the edge of the plastic shield cover and lift it clear from the top housing.
- 8
Disconnect the Battery Cable
1 minLever the battery press connector straight up from its motherboard socket using a plastic spudger to cut power.
- 9
Unplug Rear Camera Connectors
3 minUse precision tweezers or a spudger to pop off the main, depth, and macro camera flex cables from the board.
- 10
Disconnect Display and Interconnect Cables
2 minDisconnect the main screen flex ribbon and the lower sub-board interconnect ribbon from the logic board.
- 11
Unclip the Antenna Coaxial Cable
2 minGently pry up the head of the white antenna coaxial cable from its motherboard terminal using fine-tipped tweezers.
- 12
Remove the Logic Board Securing Screw
1 minUnscrew the single Phillips screw holding the lower section of the main logic board to the frame.
- 13
Pry Out the Logic Board
2 minSlide a spudger underneath the top edge of the board and gently lift it up and out from the chassis.
- 14
Reflow or Repair Micro-Components
15 minApply soldering flux and use a soldering iron or desoldering braid to repair damaged board traces or replace SMD components.
After your Motorola G50 logic board repair
Power the G50 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 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 repair context in the encyclopedia, or open related DIY guides.
