Phone · LG · V20 Mini
LG V20 Mini Logic Board Repair
Logic Board Repair guide for the LG V20 Mini
Before you begin
Tools
- Phillips #000 screwdriver
- Heat gun
- Suction cup tool
- Plastic opening picks
- Spudger tool
- Precision tweezers
- SIM eject tool
Parts / materials
- Replacement back cover adhesive strips
- Isopropyl alcohol (99%)
- Lint-free microfiber cloth
Safety
- Disconnect the battery immediately after opening to prevent short circuits.
- Wear eye protection when heating and working with glass panels.
- Wear an anti-static wrist strap to avoid damaging delicate integrated circuits.
Overview
Step-by-step
- 1
Eject SIM Card Tray
1 minInsert a SIM eject tool into the small hole beside the SIM tray. Press firmly to pop out the tray and remove it completely.
- 2
Heat Rear Cover Edges
2 minApply heat to the edges of the back cover using a heat gun for approximately 2 minutes to soften the adhesive.
- 3
Attach Suction Cup
2 minPress a suction cup firmly onto the lower portion of the rear glass panel. Pull gently up to create a small gap near the edge.
- 4
Slice Perimeter Adhesive
4 minInsert a plastic opening pick into the gap created by the suction cup. Carefully slide the pick along all four sides to slice through the adhesive.
- 5
Lift Off Rear Panel
2 minGently lift the rear cover away from the phone body, taking care not to strain the fingerprint sensor flex cable.
- 6
Disconnect Fingerprint Sensor
1 minUse the flat end of a spudger to pop the fingerprint reader press connector straight up off the motherboard.
- 7
Unscrew Midframe Screws
3 minUse a Phillips #000 screwdriver to remove all visible screws securing the internal plastic midframe assembly.
- 8
Remove Midframe Assembly
2 minInsert a plastic pry tool under the edge of the midframe and carefully pop it loose from the phone housing.
- 9
Disconnect Battery Connector
1 minPry the battery connector straight up from its socket on the logic board using a spudger to cut power.
- 10
Disconnect Display Press Connector
1 minUse your plastic spudger to detach the main display cable connector from the top right section of the board.
- 11
Disconnect Auxiliary Flex Cables
2 minCarefully detach the front camera cable, volume button flex, and lower daughterboard interconnect cables from the motherboard.
- 12
Remove Motherboard Retaining Screws
2 minRemove the remaining Phillips #000 screws anchoring the logic board directly to the front screen frame.
- 13
Lift Logic Board Out
2 minGently lever up the bottom edge of the logic board with a spudger and lift it clear from the chassis.
After your LG V20 Mini logic board repair
Power the V20 Mini 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 LG V20 Mini 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 Mini repair context in the encyclopedia, or open related DIY guides.
