Introduction

How to dismantle, resolder power switch, and reassemble the BT 250 Baby Monitor

Unclip the battery cover, and remove the batteries (they're a tight fit - the purple ribbon should help though)
  • Unclip the battery cover, and remove the batteries (they're a tight fit - the purple ribbon should help though)

Add Comment

  • Remove the two phillips screws at the lower edge of the battery compartment

Add Comment

The casing is now held together by a pair of snap-fixings on each side, which will require careful prising apart.
  • The casing is now held together by a pair of snap-fixings on each side, which will require careful prising apart.

  • Using the picture as a guide to show where the catches are (red circles), use a small screwdriver or a spudger-type tool to release them levering outwards, then carefully separate the two halves of the casing

Add Comment

Deck the Halls
With tools and Fix Kits
The LCD is held on by a pair of small plastic lugs, one each side.  Release these one at a time, while gently lifting the LCD up from the board.
  • The LCD is held on by a pair of small plastic lugs, one each side. Release these one at a time, while gently lifting the LCD up from the board.

  • Once both clips are released, it will hinge forward and down.

Add Comment

Remove the two screws from under the LCD
  • Remove the two screws from under the LCD

  • Remove the single screw in the middle of the lower part of the PCB

  • Gently bend up the two charging connectors on the lower edge of the PCB that stick through the case to free it

  • Lift the PCB from the case, lower edge first

Add Comment

With the PCB removed, inspect the switches along the top edge.
  • With the PCB removed, inspect the switches along the top edge.

  • On mine, the solder holding the switch mounting tabs to the PCB had failed, leaving both tabs and pads intact

  • Carefully resolder these, ensuring enough heat is applied to ensure a good joint, but without damaging neighbouring components

Add Comment

  • Reassembly is the reverse of dismantling.

  • Remember to bend the charging connectors back into place so they are correctly seated

  • Replace the vibrate motor into its' groove.

  • Ensure the switches all operate correctly before clipping the two case halves back together - sometimes the little pieces of adhesive foam on the 'button pressers' need to be adjusted.

Add Comment

Conclusion

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

davidmpye

Member since: 12/21/2015

101 Reputation

1 Guide authored

0 Comments

Add Comment

View Statistics:

Past 24 Hours: 2

Past 7 Days: 5

Past 30 Days: 26

All Time: 439