Phone · LG · V20
LG V20 Microphone Repair
Microphone Repair guide for the LG V20
Before you begin
Tools
- Precision screwdriver set (Phillips #00)
- Plastic prying tools
- Spudger tool
- Tweezers
- Anti-static wrist strap
- Clean workspace mat
Parts / materials
- Replacement LG V20 lower microphone daughterboard
- Isopropyl alcohol (99%)
Safety
- Power off the device completely before starting any disassembly.
- Wear an anti-static wrist strap to avoid electrostatic damage to internal components.
- Do not puncture or bend the removable lithium-ion battery during handling.
Overview
Step-by-step
- 1
Press the rear cover release button
1 minLocate the small mechanical release button on the lower-right edge of the phone. Press it to pop open the rear cover lock.
- 2
Remove the rear aluminum cover
1 minLift the metal back panel away from the phone body and set it aside.
- 3
Remove the battery
1 minPry up from the recess notch at the bottom of the battery bay and lift the battery out.
- 4
Unscrew the top plastic chin
2 minUse a Phillips #00 screwdriver to remove the screws securing the top plastic lip.
- 5
Detach the top chin guard
1 minSlide a plastic spudger under the top plastic cap and unclip it from the frame.
- 6
Unscrew the bottom plastic chin
2 minRemove the Phillips #00 screws holding the lower plastic guard piece.
- 7
Detach the bottom chin guard
1 minGently unclip and pull the lower plastic cap away from the chassis.
- 8
Unscrew the midframe housing
3 minRemove all remaining visible Phillips #00 screws securing the inner plastic midframe assembly.
- 9
Pry off the midframe panel
2 minInsert a plastic prying tool along the inner border and snap the midframe away from the main body.
- 10
Disconnect the daughterboard flex cable
1 minUse the flat end of a spudger to pop the lower microphone/daughterboard ribbon connector straight up.
- 11
Disconnect the coaxial antenna cables
2 minCarefully pry up the antenna cable heads from their sockets on the lower daughterboard using fine tweezers.
- 12
Remove the defective microphone board
2 minPry under the lower daughterboard containing the primary microphone and lift it out of the recess.
- 13
Position the new microphone board
2 minSet the replacement daughterboard into the bottom chassis housing, ensuring alignment pins match up.
- 14
Reconnect the antenna wires
2 minSnap the coaxial antenna connectors securely onto their corresponding terminals on the new board.
- 15
Connect the daughterboard flex ribbon
1 minAlign the press connector over its socket and press firmly until it clicks into place.
- 16
Reattach the plastic midframe
3 minPress the midframe housing back onto the phone until clip clips engage, then reinstall all saved midframe screws.
- 17
Reinstall top and bottom chins
2 minSnap both end caps onto the phone frame and fasten their respective Phillips screws.
- 18
Reinsert the battery and back cover
1 minAlign the battery contacts and seat the battery, then snap the rear metal cover back into place.
After your LG V20 microphone repair
Power the V20 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 LG V20 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more LG V20 repair context in the encyclopedia, or open related DIY guides.
