Difficulty
Moderate
Steps
16
Time Required
25 - 30 minutes
Sections
3
- Battery
- 7 steps
- Auto-Away Sensor
- 3 steps
- Motherboard
- 6 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.
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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 the 4 mm screw from the motherboard using a #0 Phillips screwdriver.
Remove the 4 mm screw from the motherboard using a #0 Phillips screwdriver.
Step 12
Removal of EMI Shield
- Remove the EMI shield from the motherboard using a plastic opening tool.
Remove the EMI shield from the motherboard using a plastic opening tool.
Step 13
Disconnect the LCD ribbon
- Unsnap the LCD ribbon from the motherboard gently using tweezers.
Unsnap the LCD ribbon from the motherboard gently using tweezers.
Step 14
Disconnect the motherboard from the display
- 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
Separate the motherboard and the display
- Pull the face display gently away from the motherboard.
Pull the face display gently away from the motherboard.
Step 16
Separate motherboard from steal ring
- Using one hand to hold the steel ring, carefully lift the motherboard out of the ring using the other hand.
Using one hand to hold the steel ring, carefully lift the motherboard out of the ring using the other hand.
To reassemble your device, follow these instructions in reverse order.
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Author
with 4 other contributors
Charles Suleskey
Member since: 09/23/2014
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Team
USF Tampa, Team 11-5, Blackwell Fall 2014
Member of USF Tampa, Team 11-5, Blackwell Fall 2014
USFT-BLACKWELL-F14S11G5
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11 Guides authored
