Phone · OnePlus · Nord N300 5G
OnePlus Nord N300 5G Microphone Repair
Microphone Repair guide for the OnePlus Nord N300 5G
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Precision screwdriver set (Phillips #000)
- Spudger tool
- Tweezers
- SIM eject tool
Parts / materials
- Replacement sub-board with microphone
- Back cover adhesive strips
- Isopropyl alcohol (99%)
Safety
- Ensure the device is powered off before beginning disassembly.
- Wear safety glasses to protect eyes from potential flying debris when heating or prying edges.
- Do not puncture or bend the battery located above the lower sub-board.
Overview
Step-by-step
- 1
Power off device
1 minPress and hold the power button, then tap Power Off to shut down the device completely.
- 2
Eject SIM tray
1 minInsert a SIM eject tool into the hole on the left edge of the phone to pop out the SIM card tray.
- 3
Heat back cover
2 minApply heat around the rear edges of the phone with a heat gun for 2 minutes to soften the adhesive.
- 4
Attach suction cup
1 minPlace a suction cup near the bottom edge of the back panel and pull up to create a minor gap.
- 5
Insert opening pick
1 minSlide a thin plastic opening pick into the gap between the rear glass and the middle frame.
- 6
Slice perimeter adhesive
3 minSlide the pick around all four sides of the phone to cut through the remaining rear adhesive.
- 7
Remove back cover
1 minCarefully lift the rear cover off the chassis and place it on a clean surface.
- 8
Unscrew loudspeaker assembly
2 minRemove the Phillips #000 screws securing the bottom loudspeaker module.
- 9
Remove loudspeaker housing
1 minInsert the point of a spudger under the edge of the loudspeaker and pry it out of the chassis.
- 10
Disconnect interconnect flex
1 minUse the flat end of a spudger to disconnect the main interconnect ribbon cable from the sub-board.
- 11
Disconnect antenna cable
1 minGently pry up the coaxial antenna connector from the lower sub-board using tweezers.
- 12
Remove microphone board
2 minPry the bottom daughterboard containing the primary microphone up and lift it out of the frame.
- 13
Install new microphone board
2 minPlace the replacement sub-board into the bottom cavity of the frame and press gently to seat it.
- 14
Reconnect antenna cable
1 minAlign the coaxial antenna head over its sub-board socket and snap it straight down into place.
- 15
Reconnect interconnect flex
1 minAlign the flex cable connector over the sub-board port and press down until it clicks.
- 16
Position loudspeaker assembly
1 minSet the loudspeaker housing back over the daughterboard module and press it into place.
- 17
Secure loudspeaker screws
2 minReinstall and tighten all Phillips #000 screws on the lower speaker module.
- 18
Apply new adhesive
2 minLay down fresh adhesive strips along the perimeter edges of the phone frame.
- 19
Reattach back cover
2 minAlign the back cover over the frame and press firmly along the edges to seal the repair.
- 20
Reinsert SIM tray
1 minPush the SIM card tray back into its slot until it sits completely flush.
After your OnePlus Nord N300 5G microphone repair
Power the Nord N300 5G back on and test the microphone 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.
