Elonex 7" digital photo frame / freeview tv anyone know how to get one apart?

[ProDave]

Elonex 7" digital photo frame / freeview tv model number LNX/PFD9501/BLK

Completely dead, but I can't get the case open.

There are no visible screws anywhere, not even under the model number label.

So the two halves of the case must just clip together?

But I've been all round the joint with a flat knife, and they are not clipped right at the edge.

So anyone tried (successfully or otherwise) to get one of these open?