Phone · Motorola · Moto G45 5G
Motorola Moto G45 5G Logic Board Repair
Logic Board Repair guide for the Motorola Moto G45 5G
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
Parts / materials
- Flux
- High-purity Isopropyl Alcohol
- Replacement back cover adhesive
- Cotton swabs
Safety
- Wear an anti-static wrist strap to prevent electrostatic discharge damage to delicate micro-chips.
- Work in a well-ventilated area to avoid inhaling flux fumes during soldering.
- Use caution when heating the phone to avoid overheating the lithium-ion battery.
Overview
Step-by-step
- 1
Turn off the phone
1 minPress and hold the power button, then select power off to ensure the device is completely powered down.
- 2
Eject the SIM tray
1 minInsert a SIM eject tool into the hole beside the SIM tray and press firmly to release the card holder.
- 3
Heat the rear cover
3 minApply a heat gun or heating pad around the edges of the back panel for two minutes to soften the internal adhesive.
- 4
Slice the rear adhesive
5 minInsert a thin plastic opening pick into the seam along the edge and slide it around the perimeter to detach the back cover.
- 5
Remove midframe screws
4 minUse a Phillips #00 screwdriver to remove all visible screws securing the plastic midframe to the phone chassis.
- 6
Unclip and lift the midframe
3 minInsert a spudger along the outer frame perimeter to release the plastic clips, then lift the midframe away.
- 7
Disconnect the battery cable
1 minPry up the battery press connector from the logic board using the flat end of a plastic spudger.
- 8
Disconnect main flex cables
2 minDisconnect the main display flex cable and the lower sub-board interconnect cable from the logic board.
- 9
Remove rear and front cameras
3 minUnplug the camera flex connectors using tweezers or a spudger, then lift the camera modules out of their housings.
- 10
Disconnect coaxial antenna cables
2 minUse fine tweezers to gently unsnap the white and black coaxial antenna connectors from the logic board.
- 11
Remove motherboard screws
2 minUnscrew the remaining Phillips screws holding the motherboard flat against the inner frame.
- 12
Lift out the logic board
2 minCarefully pry underneath the top edge of the logic board and remove it from the phone chassis.
- 13
Clean solder pads and contacts
5 minApply flux to damaged surface-mount pads on the board and clean oxidized areas using isopropyl alcohol and a cotton swab.
- 14
Solder target board components
10 minUse a fine-tip soldering iron and desoldering braid to clear excess solder and re-solder damaged board components.
- 15
Reinstall the logic board
2 minAlign the repaired logic board over its alignment pins and lay it flat into the chassis.
- 16
Reconnect camera modules and antennas
3 minPress the camera modules back into position and snap the coaxial antenna cables onto their board terminals.
- 17
Reconnect display and battery cables
2 minReattach the interconnect flex, display flex, and battery connector onto their respective motherboard sockets.
- 18
Secure the midframe
4 minPlace the midframe back over the assembly, snap the edges down, and tighten all saved Phillips screws.
- 19
Reseal the back cover
4 minApply fresh precut adhesive strips to the perimeter frame and press the rear panel firmly into place.
After your Motorola Moto G45 5G logic board repair
Power the Moto G45 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 Moto G45 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 Moto G45 5G repair context in the encyclopedia, or open related DIY guides.
