Power Adapter for Telustv-21T

A couple months ago, Telus sent me replacement power adapters for my three Telustv-21T Optik TV boxes. I replaced the power adapters on all three. Two of the three boxes are showing a solid white LED and their remotes are non-responsive. They won't reboot with a hard power reset.

The third box works fine. I took that unit's power adapter to the other two boxes and they both work fine with that power adapter.

Clearly, two of the three new power adapters are faulty.