Step-by-step

1. 1

   Power Down the Galaxy S8 Active

   1 min

   Press and hold the power button, then select Power Off on the screen. Ensure the device is completely shut down before starting.

2. 2

   Eject the SIM and MicroSD Tray

   1 min

   Insert a SIM eject tool into the pinhole on the top edge of the phone. Push firmly to pop out the tray and remove it.

3. 3

   Heat the Rear Panel

   3 min

   Apply heat to the outer edges of the rear cover using a heat gun for approximately two minutes. Soften the factory adhesive seal without overheating the internal battery.

4. 4

   Slice the Rear Adhesive

   4 min

   Insert a plastic opening pick between the rear glass and the metal body frame. Carefully slide the pick along all edges to cut through the adhesive seal.

5. 5

   Remove the Back Cover

   2 min

   Lift the rear cover straight up off the chassis. Set it aside in a safe, dust-free area.

6. 6

   Unscrew the Internal Midframe

   4 min

   Use a Phillips precision screwdriver to remove all screws securing the midframe and wireless charging pad assembly. Organize the screws by location.

7. 7

   Pry Away the Midframe

   2 min

   Insert a plastic spudger into the notch of the midframe housing. Gently pry up to pop the plastic clips clear of the phone frame.

8. 8

   Disconnect the Battery Flex Cable

   1 min

   Pry the battery press connector straight up from the motherboard socket using the flat end of a spudger. This cuts power to the board during repair.

9. 9

   Disconnect Display and Camera Flexes

   3 min

   Unplug the display connector, front camera, rear camera, and sensor flex cables from the logic board using a spudger. Lift each connector straight up off its socket.

10. 10

    Remove the Motherboard Screws

    2 min

    Extract the small Phillips screws holding the main logic board to the internal aluminum frame. Store these screws separately from the midframe screws.

11. 11

    Extract the Main Logic Board

    2 min

    Carefully lift the logic board up from the bottom edge and slide it free from the phone frame. Ensure no lingering flex cables catch on the board.

12. 12

    Apply Flux to Board Joints

    3 min

    Position the logic board under a magnifying lamp and apply a small layer of flux to the damaged solder points or micro-components. Use tweezers to align tiny components.

13. 13

    Resolder Damaged Motherboard Components

    10 min

    Use a fine-tip soldering iron and desoldering braid to clear broken solder joints and re-solder connections. Avoid holding heat on any component for more than three seconds.

14. 14

    Clean Board with Isopropyl Alcohol

    3 min

    Gently scrub away burnt flux residue using a cotton swab lightly dampened with 99% isopropyl alcohol. Allow the board to dry completely before reinstallation.

15. 15

    Reinstall the Logic Board

    2 min

    Place the repaired logic board back into the metal chassis alignment pins. Secure it in place using the original board screws.

16. 16

    Reconnect Internal Flex Cables

    3 min

    Snap the display, camera, and sensor flex cables back into their respective logic board sockets. Reconnect the battery flex cable last.

17. 17

    Reattach Midframe and Rear Cover

    5 min

    Snap the midframe back into the phone and reinsert all midframe screws. Apply fresh pre-cut adhesive to the rear cover and press it firmly into place.