Remove the 9 volt battery and unplug the alarm clock

Remove the 4 screws and seperate the two halves

4 screws are removed to release the top PCB, the screen and top PCB can then be removed. The speaker is permanently installed in the top and cannot be removed without unsoldering it and removing the glue.

Transformer and wire strain relief are held in by 3 screws, when removed each part can be lifted out.

All buttons from top case lift out completing the disassembly. Without de-soldering the 9v battery connector and the speaker the top and bottom case halves are still connected.