Phone · Samsung · Galaxy S3 Mini
Samsung Galaxy S3 Mini Logic Board Repair
Logic Board Repair guide for the Samsung Galaxy S3 Mini
Before you begin
Tools
- Precision screwdriver set (Phillips #00)
- Plastic prying tools
- Spudger tool
- Tweezers
- Anti-static wrist strap
Parts / materials
- Replacement Samsung Galaxy S3 Mini logic board
- Isopropyl alcohol (99%)
- Microfiber cleaning cloth
Safety
- Wear an anti-static wrist strap to protect sensitive microchips from electrostatic discharge.
- Ensure the phone is completely powered off and disconnected from chargers before opening.
- Pry gently on flex cable connectors to avoid tearing delicate ribbon cables.
Overview
Step-by-step
- 1
Power Off the Device
1 minPress and hold the power button on the right side, then select Power Off on the screen.
- 2
Remove the Back Panel
1 minInsert a fingernail or plastic prying tool into the notch on the top corner and lift the cover off.
- 3
Remove the Battery
1 minUse the notch at the bottom of the battery compartment to lift and remove the battery.
- 4
Remove MicroSD and SIM Cards
1 minSlide the SIM card and microSD card out from their respective slots.
- 5
Remove Midframe Screws
3 minUse a Phillips #00 screwdriver to remove the ten screws securing the rear midframe.
- 6
Pry Off the Rear Midframe
2 minInsert a plastic prying tool between the front panel and midframe, then unclip around the perimeter.
- 7
Disconnect the Display Cable
1 minUse the flat end of a spudger to pry the display flex connector straight up off the board.
- 8
Disconnect the Digitizer Cable
1 minGently disconnect the touch screen digitizer flex cable using your spudger.
- 9
Disconnect the Front Camera Connector
1 minPry the front camera ribbon cable connector up from its socket on the top of the board.
- 10
Disconnect the Headphone Jack Connector
1 minUse a spudger to pop up the headphone assembly flex cable connector.
- 11
Disconnect the Antenna Cable
1 minUse tweezers to lift the circular coaxial antenna cable head off its terminal.
- 12
Remove Motherboard Screw
1 minRemove the single Phillips #00 screw securing the logic board near the bottom right.
- 13
Lift Out the Logic Board
2 minGently lift the logic board out of the phone chassis from the top edge.
- 14
Position Replacement Logic Board
2 minLower the new logic board into the phone frame, ensuring all cable connectors rest above it.
- 15
Secure Logic Board Screw
1 minReinstall the single Phillips #00 retaining screw on the lower portion of the board.
- 16
Reconnect Antenna Cable
1 minAlign the coaxial antenna head over its socket and press gently until it snaps into place.
- 17
Reconnect All Board Connectors
2 minPress down firmly to reconnect the display, digitizer, camera, and headphone jack connectors.
- 18
Reattach Rear Midframe
2 minAlign the midframe over the chassis and press around the edges until all clips click.
- 19
Reinstall Midframe Screws
3 minThread and tighten the ten Phillips #00 screws back into the rear midframe.
- 20
Insert Battery and Covers
1 minReinsert the SIM, microSD card, and battery, then snap the back cover onto the phone.
After your Samsung Galaxy S3 Mini logic board repair
Power the Galaxy S3 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 Samsung Galaxy S3 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 Samsung Galaxy S3 Mini repair context in the encyclopedia, or open related DIY guides.
