Phone · Samsung · Galaxy S4 Active
Samsung Galaxy S4 Active Microphone Repair
Microphone Repair guide for the Samsung Galaxy S4 Active
Before you begin
Tools
- Phillips #00 Screwdriver
- Spudger tool
- Plastic prying tools
- Tweezers
- Anti-static wrist strap
Parts / materials
- Replacement microphone daughterboard assembly
- Isopropyl alcohol (99%)
- Cleaning wipes
Safety
- Power off the device entirely before beginning repair to reduce electrical risk.
- Handle the removable lithium-ion battery carefully without applying pressure or puncturing it.
- Wear an anti-static wrist strap to prevent electrostatic damage to internal circuitry.
Overview
Step-by-step
- 1
Power Off Phone
1 minPress and hold the Power button, then tap Power Off on the screen. Ensure the device shuts down completely before proceeding.
- 2
Remove Rear Cover
1 minInsert a plastic opening tool or fingernail into the notch near the power button. Pry the rear cover away from the chassis.
- 3
Remove Battery
1 minInsert a fingernail into the recess at the bottom of the battery compartment. Lift the battery up and remove it from the device.
- 4
Remove MicroSD and SIM
1 minPush the microSD card inward until it clicks, then pull it out. Slide the micro-SIM card straight out of its slot.
- 5
Unscrew Midframe
3 minUse a Phillips #00 screwdriver to remove the 12 screws securing the inner midframe to the phone chassis.
- 6
Unclip Midframe Assembly
3 minInsert a spudger between the midframe edge and the glass display. Pry around the outer edge to release the plastic clips and remove the midframe.
- 7
Disconnect Daughterboard Cable
1 minUse the flat end of a spudger to pry up the microphone daughterboard flex connector from the motherboard.
- 8
Disconnect Antenna Cables
2 minUse tweezers or a spudger to pry the lower ends of the coaxial antenna cables straight up off the daughterboard.
- 9
Pry Up Microphone Assembly
2 minInsert a plastic spudger beneath the bottom daughterboard containing the primary microphone and micro-USB port. Carefully pry the board up from the chassis adhesive.
- 10
Install Replacement Daughterboard
2 minPosition the new microphone daughterboard into the bottom slot. Press down firmly to seat the microphone and USB port in the frame.
- 11
Reconnect Antenna Cables
2 minAlign the antenna coaxial connectors over their sockets on the daughterboard. Gently snap them straight down into place.
- 12
Reconnect Daughterboard Cable
1 minAlign the main daughterboard flex cable over its connector on the motherboard and press down until it snaps closed.
- 13
Reattach Midframe
2 minPlace the midframe onto the rear of the phone display assembly. Press along the outer perimeter until all plastic tabs snap shut.
- 14
Secure Midframe Screws
3 minReinstall the 12 Phillips #00 screws to secure the midframe tightly against the display housing.
- 15
Reinsert Cards and Battery
1 minSlide the SIM card and microSD card into their respective slots. Reinsert the battery matching the gold contacts.
- 16
Reattach Rear Cover
1 minAlign the back cover over the rear of the device. Press firmly around all edges to properly seal the rubber water-resistance gasket.
After your Samsung Galaxy S4 Active microphone repair
Power the Galaxy S4 Active 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 S4 Active 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 S4 Active repair context in the encyclopedia, or open related DIY guides.
