Corsair Katar Optical Sensor Replacement

Flip the mouse over so the bottom is facing up.

Remove the three skates on the bottom of the mouse using the plastic opening tools.

Use the JIS 0 screwdriver to remove the four 5 mm screws on the bottom of the mouse.

Detach the bottom of the mouse from the upper shell.

Use the plastic opening tool to detach the white DPI sensor cable from its port.

Use the JIS 0 screwdriver to remove the two 5mm screws on the motherboard.

Use the plastic opening tool to pry the white cable jack away from the motherboard.

Lift the motherboard away from the bottom of the mouse.

Push the scroll wheel to the right side of the motherboard as shown, then pull it away from the board to remove.

Flip the motherboard over and remove the clear plastic cover from the bottom of the board.

Desolder the 20 connecting pins to remove the optical sensor.