Phone · OnePlus · Nord N300 5G
OnePlus Nord N300 5G Logic Board Repair
Logic Board Repair guide for the OnePlus Nord N300 5G
Before you begin
Tools
- SIM eject tool
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Precision screwdriver set (Phillips #00)
- Spudger tool
- Tweezers
Parts / materials
- Replacement back cover adhesive tape
- Isopropyl alcohol (99%)
Safety
- Wear safety glasses to protect eyes from hot air and potential glass debris.
- Discharge the phone battery below 25% before starting to reduce thermal runaway risk.
- Wear an anti-static wrist strap to prevent electrostatic discharge from damaging motherboard components.
Overview
Step-by-step
- 1
Eject the SIM Tray
1 minInsert a SIM eject tool into the hole on the left edge of the phone. Push firmly inward to pop out the SIM tray, then remove it completely.
- 2
Heat the Back Panel
3 minApply heat evenly around the outer edges of the rear panel for two minutes using a heat gun or hair dryer to soften the perimeter adhesive.
- 3
Attach Suction Cup
2 minPress a suction cup onto the lower portion of the back cover near the bottom edge. Pull up firmly to create a small gap between the cover and the frame.
- 4
Slice Rear Adhesive
4 minInsert a plastic prying pick into the gap created by the suction cup. Slide the pick around all four edges to slice through the adhesive seal.
- 5
Remove Back Cover
1 minLift the rear cover away from the phone body and place it on a clean surface.
- 6
Unscrew Upper Shield
3 minUse a Phillips #00 screwdriver to remove all screws holding the top protective motherboard bracket in place.
- 7
Remove Motherboard Shield
2 minGently pry under the edges of the motherboard cover with a spudger to unhook its clips, then remove it from the frame.
- 8
Disconnect Battery Cable
1 minUse the flat end of a plastic spudger to pry the battery flex cable directly up from its motherboard terminal.
- 9
Disconnect Display and Main Flex Cables
2 minPry up the press connectors for the main interconnect cable and display flex cable using a plastic spudger.
- 10
Disconnect Antenna Cables
2 minUse precision tweezers to lift the tiny coaxial antenna cable connectors straight off their headers on the logic board.
- 11
Remove Front Camera
2 minDisconnect the front-facing camera ribbon cable and lift the camera module out of its recessed housing.
- 12
Unscrew Logic Board
1 minRemove the single Phillips screw securing the upper logic board assembly to the internal chassis frame.
- 13
Extract Logic Board
2 minGently lever the logic board up from the bottom edge using a spudger and lift it out of the chassis completely.
After your OnePlus Nord N300 5G logic board repair
Power the Nord N300 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 OnePlus Nord N300 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 OnePlus Nord N300 5G repair context in the encyclopedia, or open related DIY guides.
