Canon PowerShot SD850 IS Function Set Button Replacement

Slide the light grey tab toward the edge of the camera using your fingernail.

Pull the light grey tab up to open the door.

Slide the small brown tab toward the edge of the camera using your fingernail.

Let go of the brown tab when the battery pops up.

Grab battery and pull straight up to remove from holder.

Remove the following 4 screws:

Two 2.8 mm Phillips #00 at the bottom of the camera.

Two 2.75 mm Phillips #00 on the opposite side of the wrist strap.

Open the A/V OUT DIGITAL flap on the side of the wrist strap.

Remove the 2.75 mm Phillips #00 under the A/V OUT DIGITAL flap on the side of the wrist strap.

On the bottom of the camera, use your fingernail to slide the light gray tab towards the edge of the camera.

Slide light gray door and pull up to open the door.

Remove the 8.35 mm Phillips #00 next to the brown tab that holds the battery.

Gently pull the front cover straight out from the camera. This will expose the wiring on the front of the camera.

Remove the 2.75 mm Phillips #00 next to A/V OUT DIGITAL.

Slide the back casing (with the screen protector) off to reveal the LCD and back wiring.

Identify and remove the plastic function set button. Do this by gently prying up as indicated in the photo.

Lift the function set button ribbon cable from the two guide pins.

Remove the ribbon cable by lifting on the flat tab and pulling the ribbon cable from the connection.