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  1. Canon PowerShot S400 Battery Replacement, Canon PowerShot S400 Battery Replacement: step 1, image 1 of 2 Canon PowerShot S400 Battery Replacement, Canon PowerShot S400 Battery Replacement: step 1, image 2 of 2
    • Unless stated otherwise, use a Phillips #00 screwdriver to remove all screws.

    • On the backside of the camera, remove the 4.75 mm screw that sits at the top right corner.

    • Remove the four 4.75 mm screws that sit at the bottom of the camera.

  2. Canon PowerShot S400 Battery Replacement: step 2, image 1 of 1
    • On the side of the camera, remove the two 4.75 mm screws that sit near the USB digital terminal.

  3. Canon PowerShot S400 Battery Replacement: step 3, image 1 of 3 Canon PowerShot S400 Battery Replacement: step 3, image 2 of 3 Canon PowerShot S400 Battery Replacement: step 3, image 3 of 3
    • On the side of the camera, remove the four 4.75 mm screws that sit near the wrist strap mount.

    • Remove the two small metal plates, which the four screws held in place.

  4. Canon PowerShot S400 Battery Replacement: step 4, image 1 of 2 Canon PowerShot S400 Battery Replacement: step 4, image 2 of 2
    • When removing the casing, do not drop the small black plastic piece. This piece sits in a small gap above the lens, to the left of the flash, and underneath the camera case.

    • Remove the small black plastic piece and set it aside.

    • If necessary, use tweezers to remove the small black plastic piece.

    • Detach the front case and back case.

  5. Canon PowerShot S400 Battery Replacement: step 5, image 1 of 1
    • Do not remove the metal plate this step refers to. Removal at this step may damage the ribbon cable. Wait until the next step to remove the plate.

    • Remove the 3.5 mm screw that sits on the metal plate at the bottom of the camera.

    • Remove the two other 3.5 mm screws that sit on the side, to the left of the screw you just removed.

    • In the image, we have already removed some of the screws.

  6. Canon PowerShot S400 Battery Replacement: step 6, image 1 of 3 Canon PowerShot S400 Battery Replacement: step 6, image 2 of 3 Canon PowerShot S400 Battery Replacement: step 6, image 3 of 3
    • A ribbon cable attaches to the metal plate and to the main circuit board, on the front of the camera.

    • Gently release the black latch.

    • Remove the ribbon cable and metal plate assembly.

  7. Canon PowerShot S400 Battery Replacement: step 7, image 1 of 2 Canon PowerShot S400 Battery Replacement: step 7, image 2 of 2
    • On the backside of the camera, remove the 3.5 mm screw that sits to the left of the viewfinder and above the LCD screen.

    • Remove the second 3.5 mm screw that sits directly above the LCD screen.

    • Gently detach the ribbon cable.

  8. Canon PowerShot S400 Battery Replacement: step 8, image 1 of 1
    • Locate the ribbon cable on the main circuit board, which sits below the lens.

    • Gently release the black latch on the ribbon cable connector and detach the ribbon cable.

  9. Canon PowerShot S400 Battery Replacement: step 9, image 1 of 2 Canon PowerShot S400 Battery Replacement: step 9, image 2 of 2
    • Remove the LCD screen and set it aside.

  10. Canon PowerShot S400 Battery Replacement: step 10, image 1 of 1
    • Locate the ribbon cable connection to the left of the lens on the main circuit board.

    • Gently flip open the black latch on the connector and detach the ribbon cable.

  11. Canon PowerShot S400 Battery Replacement: step 11, image 1 of 1
    • Locate the three ribbon cables on the main circuit board. Gently flip open these black latches.

    • Gently disconnect the ribbon cables.

  12. Canon PowerShot S400 Battery Replacement: step 12, image 1 of 2 Canon PowerShot S400 Battery Replacement: step 12, image 2 of 2
    • Locate the white and green connectors underneath the flash.

    • Gently disconnect these connectors.

  13. Canon PowerShot S400 Battery Replacement: step 13, image 1 of 1
    • Using a spudger, carefully pry the shutter button assembly from the camera.

  14. Canon PowerShot S400 Battery Replacement: step 14, image 1 of 1
    • Remove the four screws securing the main circuit board to the rest of the camera. (In the image, some of the screws have already been removed)

    • Do not remove the main circuit board yet.

  15. Canon PowerShot S400 Battery Replacement: step 15, image 1 of 3 Canon PowerShot S400 Battery Replacement: step 15, image 2 of 3 Canon PowerShot S400 Battery Replacement: step 15, image 3 of 3
    • Do not completely lift the circuit board off the camera. The circuit board is attached to the top of the camera by a soldered ribbon cable. Lifting the main circuit board off the camera will break these soldering points.

    • Gently lift the bottom of the main circuit board, the side without the soldered attachment points, like a hinge.

    • Locate the white ribbon cable attached to the underside of the main circuit board.

    • Gently remove the white ribbon cable from the connector.

  16. Canon PowerShot S400 Battery Replacement: step 16, image 1 of 2 Canon PowerShot S400 Battery Replacement: step 16, image 2 of 2
    • Locate and remove the three 3.45mm screws on the backside of the camera that secure the CF card slot.

    • Make note of the orientation of the ribbon cable connected to the CF card slot. You will need this for re-assembly.

    • Gently remove the CF card slot.

  17. Canon PowerShot S400 Battery Replacement: step 17, image 1 of 1
    • Orient the camera so you are looking at the top.

    • Locate the white connector that attaches the flex circuit to the capacitor.

    • You may have to pull the connector out of a small space behind the flash bulb in order to access it.

    • Disconnect the connector.

  18. Canon PowerShot S400 Battery Replacement: step 18, image 1 of 1
    • Adhesive tape attaches the flex circuit to the top of the camera. Gently un-stick the flex circuit from the tape, but do not completely remove the flex circuit.

  19. Canon PowerShot S400 Battery Replacement: step 19, image 1 of 2 Canon PowerShot S400 Battery Replacement: step 19, image 2 of 2
    • Remove the two 3.45mm screws located on the backside of the camera.

    • Separate the battery compartment and the lens-flash assembly.

  20. Canon PowerShot S400 Battery Replacement: step 20, image 1 of 1
    • Set the lens-flash assembly aside.

    • The next step requires the use of a soldering iron. Do not perform this step if you do not have experience soldering, you could permanently damage the mother board

    • De-solder the two soldered ribbon cables attached to the motherboard.

    • Separate the motherboard and battery case.

  21. Canon PowerShot S400 Battery Replacement: step 21, image 1 of 1
    • Replace battery casing

Conclusion

To reassemble your device, follow these instructions in reverse order.

System

Member since: 09/24/2009

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