Phone · Motorola · Moto E7 Power
Motorola Moto E7 Power Logic Board Repair
Logic Board Repair guide for the Motorola Moto E7 Power
Before you begin
Tools
- SIM eject tool
- Phillips #00 screwdriver
- Plastic opening picks
- Nylon spudger
- Fine tweezers
- Magnifying glass
- Soldering iron
Parts / materials
- Flux paste
- 99% Isopropyl alcohol
- Lint-free swabs
- Fine solder wire
Safety
- Wear an anti-static wrist strap to protect sensitive components from electrostatic discharge.
- Operate in a well-ventilated area when heating flux and solder.
- Ensure the battery is completely disconnected before touching circuit components with metal tools.
Overview
Step-by-step
- 1
Eject SIM tray
1 minInsert a SIM eject tool into the small hole beside the SIM tray on the left edge. Push firmly to pop the tray out and remove it.
- 2
Unclip plastic back cover
3 minInsert a plastic opening pick into the seam between the display rim and back panel. Pry around the perimeter to release all plastic clips.
- 3
Disconnect fingerprint sensor
2 minCarefully hinge the back cover open without pulling hard. Use tweezers to detach the fingerprint sensor ribbon connector from the motherboard.
- 4
Unscrew main board cover
2 minRemove the Phillips #00 screws securing the plastic protective bracket over the upper logic board.
- 5
Remove upper bracket
1 minLift the plastic bracket up and off the phone frame to expose the motherboard.
- 6
Disconnect battery cable
1 minUse a nylon spudger to pry the battery flex connector straight up from its socket.
- 7
Disconnect display flex
1 minPry up the display press connector from the logic board using the tip of a spudger.
- 8
Disconnect ribbon cable
1 minUnplug the main interconnect flex cable connecting the logic board to the lower daughterboard.
- 9
Disconnect antenna cable
1 minGently lift the coaxial antenna cable connector off its motherboard terminal with fine tweezers.
- 10
Unscrew logic board
1 minRemove the single Phillips screw holding the logic board to the plastic internal chassis.
- 11
Remove logic board
2 minCarefully tilt the logic board up from the top edge and lift it clear of the chassis.
- 12
Inspect logic board
5 minExamine the board under a magnifying glass to locate cold solder joints, broken traces, or corrosion.
- 13
Apply soldering flux
2 minPlace a small drop of soldering flux paste onto the target component pins or micro-soldering pads.
- 14
Reflow solder connections
8 minTouch the preheated fine-tip soldering iron to the joint to reflow the solder cleanly.
- 15
Clean board surface
3 minWipe away excess flux residue using a lint-free swab dipped in high-purity isopropyl alcohol.
- 16
Reseat logic board
2 minAlign the logic board back into the chassis and press it gently into position.
- 17
Reconnect internal cables
3 minSnap the antenna, interconnect, display, and battery connectors firmly back into their respective sockets.
- 18
Reassemble top bracket and cover
4 minReinstall the mainboard cover with its screws, reconnect the fingerprint flex, and snap the back panel shut.
After your Motorola Moto E7 Power logic board repair
Power the Moto E7 Power 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 E7 Power 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 E7 Power repair context in the encyclopedia, or open related DIY guides.
