Phone · Samsung · Galaxy A34
Samsung Galaxy A34 Microphone Repair
Microphone Repair guide for the Samsung Galaxy A34
Before you begin
Tools
- Phillips #000 screwdriver
- Plastic prying tools
- Suction cup tool
- Heat gun or hair dryer
- Tweezers
- Spudger tool
- SIM eject tool
Parts / materials
- Replacement Galaxy A34 sub-board with microphone
- Pre-cut rear panel adhesive strip
- Isopropyl alcohol (99%)
Safety
- Disconnect the battery press connector before removing internal components to prevent short circuits.
- Wear eye protection when heating and prying tight plastic housing panels.
- Do not puncture or crush the lithium-ion battery with sharp metal tools.
Overview
Step-by-step
- 1
Power off the device
1 minPress and hold the power button and tap 'Power Off' on the screen. Ensure the device is fully turned off before beginning.
- 2
Remove the SIM tray
1 minInsert a SIM eject tool into the small hole on the top edge of the frame. Press firmly to eject the card tray and pull it out.
- 3
Heat the back panel
2 minUse a heat gun or hairdryer on low heat to warm the outer edges of the back panel for two minutes. This softens the factory adhesive.
- 4
Attach a suction cup
1 minPlace a suction cup near the bottom edge of the back glass panel. Pull upward gently to create a slight gap between the panel and the frame.
- 5
Insert an opening pick
1 minInsert a thin plastic prying tool or opening pick into the gap created by the suction cup. Take care not to insert it deeper than 3mm.
- 6
Slice the panel adhesive
4 minSlide the plastic pick along all four edges of the back cover to cut through the perimeter adhesive sealant. Apply extra heat if the adhesive resists.
- 7
Remove the back cover
1 minLift the rear panel completely off the chassis. Set it aside on a clean surface.
- 8
Unscrew the lower speaker enclosure
2 minUse a Phillips #000 screwdriver to remove the six identical screws securing the bottom speaker assembly.
- 9
Pry up the speaker enclosure
2 minInsert a plastic spudger beneath the top edge of the lower speaker housing. Gently lever the speaker up and out of the phone.
- 10
Disconnect the battery cable
1 minPry the battery press connector straight up off the main logic board using a spudger to disable power safely.
- 11
Disconnect the main interconnect cable
1 minUse the edge of a spudger to lift and disconnect the main ribbon cable from the sub-board at the bottom.
- 12
Disconnect the antenna coaxial cables
2 minUse tweezers to carefully pry up the small round coaxial antenna cable connectors from the sub-board.
- 13
Remove the sub-board screw
1 minRemove the single Phillips #000 screw holding the sub-board to the frame using a precision screwdriver.
- 14
Remove the microphone sub-board
2 minInsert a spudger beneath the daughterboard containing the primary microphone and lift it out of the recess.
- 15
Install the new microphone board
2 minSet the replacement sub-board into its frame compartment and press down softly until it sits flat.
- 16
Reassemble the device
5 minReattach the cables, secure the sub-board and speaker module with screws, re-plug the battery, and press the back panel back into place.
After your Samsung Galaxy A34 microphone repair
Power the Galaxy A34 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 Samsung Galaxy A34 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Samsung Galaxy A34 repair context in the encyclopedia, or open related DIY guides.

