Asked to fix one of these, but am stumped at the start: how does one open it? There's no screw on the plastic base under the label, and the feet aren't removable. The only other accessible screws are the 2 on the rear side: removing the top one doesn't free the wraparound side at all, the lower one is the earth connection. Puzzled.

https://ibb.co/Pt4nnvy
https://ibb.co/8PScWFm
https://ibb.co/nRm7RVH
https://ibb.co/yQGwBrr
https://ibb.co/DWhZWKR
https://ibb.co/r2HWP7j

The thing is o/c. It looks like a simple nonelectronic one, likely an easy fix if I work out how to open it!