A friend of mine had a similar adventure with an optical disks jukebox.
The customer had bought a display model that came with a plexiglas (or glass) back panel.
Since it was installed in front of a window, the sensors inside would get tripped by a summer afternoon sun.
Fix : an 180° rotation which made for much easier viewing of the robotic arm movements but made it slightly difficult to use the mailslot. :-)
Biting the hand that feeds IT
