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OneLink Safe and Sound Bluetooth Module Replacement

Arianna Roberts and 4 other contributors

Last updated on Jan 13, 2026

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30 - 50 minutes

Moderate

Introduction

Go to step 1 ↓

If your OneLink Safe and Sound won't connect to your phone via Bluetooth it could be due to a malfunctioning Bluetooth module. This guide will walk you through opening the device and removing/replacing the Bluetooth module. The only knowledge needed is identifying the different cables used to connect the top half to the bottom half. Before replacing the Bluetooth module, please refer to the OneLink Safe and Sound Troubleshooting page for other fixes to this problem. Also before removing the OneLink from the ceiling, make sure to turn off power at your building's junction box. With the right tools you can expect to completely replace the Bluetooth module and restore it to working order.

What you need

Tools

1. Step 1 Cover
  Run the metal spudger under the plastic rim and around the perimeter, on the top of the device to loosen the adhesive.
  
  Remove plastic rim.
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2. Step 2
  Use a Phillips #0 screwdriver to remove nine screws from the top of the device.
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3. Step 3
  Tool used on this step:
  Tweezers
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  Don't yank or pull the lid off as there are ribbons and cables connecting the top of the device to the motherboard. They need to be disconnected before the top is removed.
  
  Use tweezers or a spudger to disconnect the ribbon from the motherboard.
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5. Step 4
  Use tweezers to unplug the speaker cable from the motherboard.
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6. Step 5
  Use the plastic opening tool to remove the microphone connection from the motherboard.
  
  Remove the top of the device.
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1. Step 6 Bluetooth Module
  Use the opening tool to disconnect the Wi-Fi cable from the Bluetooth module.
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2. Step 7
  Lift the Bluetooth module off of the daughterboard.
  
  Lift it straight up to avoid bending the delicate pins that connect the Bluetooth module to the board.
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