Nest Learning Thermostat 2nd Generation Optical Finger Motion Sensor Replacement

Grasp the display's metal outer ring with your fingers and pull directly away from the wall.

Turn the display over.

Remove the four 6 mm screws from the back of the display using a Phillips #0 screwdriver.

Pinch the gray 20-pin connector with your fingers and pull directly away from the display.

Locate the blue pull tab at the end of the ribbon which says, "1. Pull".

Grasp the tab with your fingers and pull directly away from the motherboard.

Locate the blue tab which says, "2. Pull".

Use tweezers to pull the battery up and away from the display.

Locate the blue tab which says "3 unplug".

Grasp the battery with your fingers. Pull gently directly away from the display to unplug the battery from the motherboard.

Grasp the battery with your fingers and pull directly away from motherboard to separate the battery from the display.

Locate the auto-away sensor.

Remove the four 3mm screws with a #0 Phillips screwdriver.

Remove the one 4mm screw located at the edge of the auto-away sensor. Use a #0 Phillips screwdriver.

Lift the auto-away sensor from motherboard using tweezers.

Peel the copper foil gently from the EMI shield.

Remove the 4 mm screw from the motherboard using a #0 Phillips screwdriver.

Remove the EMI shield from the motherboard using a plastic opening tool.

Unsnap the LCD ribbon from the motherboard gently using tweezers.

Locate the black tabs that hold the display to the motherboard.

Push the black tabs gently away from the motherboard using the plastic opening tools.

Pull the face display gently away from the motherboard.

Using one hand to hold the steel ring, carefully lift the motherboard out of the ring using the other hand.

Locate the optical sensor, a small board attached at 90 degrees from the side of the motherboard.

Using the tweezers, grasp the small green piece of exposed board on the sensor, and pull directly away from the side of the motherboard.