Phone · Motorola · Moto G84
Motorola Moto G84 Logic Board Repair
Logic Board Repair guide for the Motorola Moto G84
Before you begin
Tools
- Precision Phillips screwdriver
- Plastic opening picks
- Suction cup
- Spudger
- Heat gun or hair dryer
- Tweezers
- Magnifying glass or headlamp
- Soldering iron
Parts / materials
- Solder flux
- Desoldering braid
- Pre-cut back cover adhesive
Safety
- Wear an anti-static wrist strap to avoid damaging delicate integrated circuits.
- Always disconnect the battery flex cable before touch-testing or removing motherboard components.
- Work in a well-ventilated area when using solder and flux to avoid breathing fumes.
Overview
Step-by-step
- 1
Eject the SIM card tray
1 minInsert a SIM eject tool into the hole next to the tray on the left side of the phone. Push firmly to pop the tray out and remove it.
- 2
Heat the rear glass panel
3 minApply a heat gun or heated pad to the edges of the back panel for two minutes to soften the adhesive.
- 3
Slice through back panel adhesive
5 minAttach a suction cup near the bottom edge and insert an opening pick into the gap. Slide the pick around the perimeter to cut the adhesive.
- 4
Remove the back cover
1 minLift the rear panel off the phone body cleanly and set it aside.
- 5
Unscrew the upper shield frame
3 minUse a Phillips screwdriver to remove all visible screws securing the top plastic cover over the motherboard.
- 6
Pry off the motherboard cover
2 minInsert a plastic spudger under the edge of the upper cover frame and gently pop it off the phone.
- 7
Disconnect the battery cable
1 minUse the edge of a plastic spudger to pry the battery flex connector straight up from the motherboard socket.
- 8
Disconnect interconnect and display flexes
2 minDetach the main display flex cable and sub-board ribbon cable from their motherboard connectors.
- 9
Disconnect front and rear camera modules
2 minCarefully unclip the selfie camera and main camera press connectors from the board.
- 10
Remove logic board mounting screws
2 minUnscrew any remaining Phillips screws anchoring the logic board directly to the inner housing.
- 11
Lift out the logic board
2 minGently pry up the motherboard from the top edge and lift it out of the chassis frame.
- 12
Reflow micro-soldered components
12 minApply flux to damaged joints on the board under magnification and carefully reflow them using a soldering iron.
- 13
Reinstall the logic board
2 minSet the repaired motherboard back into the phone housing, ensuring it snaps flush into the alignment posts.
- 14
Reconnect camera and flex cables
3 minSnap the rear cameras, front camera, display flex, and main interconnect cables back into their motherboard sockets.
- 15
Reconnect battery and reattach cover
4 minPlug the battery connector back in, snap the upper plastic cover into place, and secure it with the saved Phillips screws.
After your Motorola Moto G84 logic board repair
Power the Moto G84 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 G84 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 G84 repair context in the encyclopedia, or open related DIY guides.
