Difficulty

Moderate

Steps

19

Time Required

                          30 - 40 minutes

Sections

3

  • Battery
  • 7 steps
  • Auto-Away Sensor
  • 3 steps
  • LCD Screen
  • 9 steps

Flags

0

  • BackNest Learning Thermostat 2nd Generation

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Introduction

What you need

Step 1

              Removal from Wall
  • Grasp the display’s metal outer ring with your fingers and pull directly away from the wall.

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

1024

Step 2

              Open Display
  • Turn the display over.
  • Remove the four 6 mm screws from the back of the display using a Phillips #0 screwdriver.

Turn the display over.

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

Step 3

              Remove the back of the display
  • Pinch the gray 20-pin connector with your fingers and pull directly away from the display.
  • Do NOT pull too far as there is a ribbon on the back panel connecting the 20-pin connector to the display.

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

Do NOT pull too far as there is a ribbon on the back panel connecting the 20-pin connector to the display.

Step 4

              Disconnect the base connection ribbon cable.
  • 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 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.

Step 5

              Lift battery from the base
  • Locate the blue tab which says, “2. Pull”.
  • Use tweezers to pull the battery up and away from the display.
  • Do NOT pull too far, as the battery is still connected to the motherboard and must be unplugged.

Locate the blue tab which says, “2. Pull”.

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

Do NOT pull too far, as the battery is still connected to the motherboard and must be unplugged.

Step 6

              Disconnect the battery from the motherboard
  • 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.

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.

Step 7

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

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

Step 8

              Locate auto-away sensor
  • Locate the auto-away sensor.

Locate the auto-away sensor.

Step 9

              Remove screws
  • 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.

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.

Step 10

              Remove auto-away sensor
  • Lift the auto-away sensor from motherboard using tweezers.
  • Peel the copper foil gently from the EMI shield.

Lift the auto-away sensor from motherboard using tweezers.

Peel the copper foil gently from the EMI shield.

Step 11

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

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

Step 12

              Remove EMI shield from motherboard
  • Remove the EMI shield from the motherboard using the plastic opening tools.

Remove the EMI shield from the motherboard using the plastic opening tools.

Step 13

              Disconnect the LCD ribbon from the motherboard
  • Unsnap the LCD ribbon from the motherboard gently using the tweezers.

Unsnap the LCD ribbon from the motherboard gently using the tweezers.

Step 14

              Disconnect display from motherboard
  • 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.

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.

Step 15

              Remove from motherboard
  • Pull the face display gently away from the motherboard.

Pull the face display gently away from the motherboard.

Step 16

              Remove bottom of display frame
  • The front of the glass display and plastic frame is held together by only light adhesive.
  • Push the crescent shape bottom of the display away from the plastic frame using the plastic opening tools.

The front of the glass display and plastic frame is held together by only light adhesive.

Push the crescent shape bottom of the display away from the plastic frame using the plastic opening tools.

Step 17

  • Pry the front glass and plastic frame apart gently using the plastic opening tools.

Pry the front glass and plastic frame apart gently using the plastic opening tools.

Step 18

              Remove LCD screen from plastic frame
  • Pry the LCD screen gently from the plastic frame using the plastic opening tools.

Pry the LCD screen gently from the plastic frame using the plastic opening tools.

Step 19

              Separate LCD from frame
  • Pull the LCD screen away from the plastic frame gently using your fingers.

Pull the LCD screen away from the plastic frame gently using your fingers.

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

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                                                                                      6 other people completed this guide.

Author

                                      with 3 other contributors 


                    Justin Curry

Member since: 09/23/2014

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Team

                       USF Tampa, Team 11-5, Blackwell Fall 2014                        

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                    USFT-BLACKWELL-F14S11G5                     


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                                            11 Guides authored

vladvys - Jun 14, 2016

Reply

Please could you say the type of LCD screen? Or present detailed photo of rear side?

kylegoetz - Jun 22, 2016

Reply

Yes, this is a guide for replacing the LCD. I’d like to know what LCD to order. Thanks.

erick.starke - Mar 20, 2017

Reply

Thank you for providing this tutorial. My dog, not making this up, knocked my nest off the wall. Where can I purchase the replacement green itself and the plastic opening tools you used throughout the repair? This will be my first time on something like this, but with your guide I should have a decent shot at not screwing it up.

richardrobison - Mar 11, 2019

Reply

Skip step 12. There is no reason to remove the EMI shield.

Stan Griff - May 19, 2022

Reply

Where can you get the replacement lcd screen for gen 2 nest learning thermostat?