Phone · Motorola · Moto G 5G 2020
Motorola Moto G 5G 2020 Logic Board Repair
Logic Board Repair guide for the Motorola Moto G 5G 2020
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Anti-static wrist strap
- Tweezers
- Magnifying glass or headlamp
- Soldering iron
- Desoldering braid
- Heat gun or hair dryer
- Suction cup
- Spudger
Parts / materials
- Flux
- 99% Isopropyl alcohol
- Lead-free solder wire
- Pre-cut back cover adhesive strips
Safety
- Wear safety glasses when working with hot soldering equipment and liquid flux.
- Always wear an anti-static wrist strap connected to a grounded surface to avoid ESD damage to sensitive components.
- Ensure the battery is disconnected before performing any work on the logic board.
Overview
Step-by-step
- 1
Eject the SIM card tray
1 minInsert a SIM eject tool into the hole next to the SIM card tray on the left edge. Push firmly to eject the tray and remove it from the phone.
- 2
Heat the back cover edges
2 minUse a heat gun or hair dryer on low heat to warm the perimeter of the back cover for two minutes to soften the adhesive.
- 3
Slice the back cover adhesive
5 minAttach a suction cup near the bottom edge of the back panel, pull upward, and slide a plastic opening pick under the glass. Move the pick around all four edges to slice through the perimeter tape.
- 4
Remove the back cover
2 minGently lift the back cover off the chassis and set it aside once all adhesive seals are completely separated.
- 5
Unscrew the top motherboard cover
3 minUse a Phillips #00 screwdriver to remove the nine screws securing the upper plastic motherboard shield.
- 6
Pry off the motherboard shield
2 minInsert the point of a spudger beneath the notch on the plastic shield and lift up to unsnap it from the frame.
- 7
Disconnect the battery cable
1 minPry the battery press connector straight up off the motherboard using a plastic spudger to eliminate electrical current.
- 8
Disconnect front and rear cameras
4 minUse a spudger to pop off the FPC press connectors for the front camera and all three rear camera modules, then lift the cameras out.
- 9
Disconnect display and sub-board flex cables
3 minUnplug the display main FPC, sub-board interconnect cable, and side-key button connector from the logic board using the flat end of a spudger.
- 10
Unplug the coaxial antenna cables
2 minGently pry the antenna cable heads straight up from their logic board sockets using precision tweezers.
- 11
Remove the motherboard retaining screw
2 minUnscrew the single Phillips #00 screw securing the lower edge of the logic board to the aluminum frame.
- 12
Lift out the logic board
2 minGrasp the logic board by its edges and carefully lift it out from the phone frame, ensuring no dangling flex cables catch on the board.
- 13
Rework broken board solder joints
12 minApply liquid flux to the target micro-components or connectors, then touch the soldering tip to reflow cracked solder joints or clear bridges with desoldering braid.
- 14
Reinstall the logic board
3 minLower the repaired logic board back into the housing, aligning the board cutout pins with the frame locator posts.
After your Motorola Moto G 5G 2020 logic board repair
Power the Moto G 5G 2020 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 Moto G 5G 2020 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 Moto G 5G 2020 repair context in the encyclopedia, or open related DIY guides.
