Backlights doesn't work

[Bloris]

This is something you'll need to contact support about. I suggest opening a ticket rather than emailing them at this time.

Very strange stuff - all PBPs (every-single-one) go though QC at the factory, so it must have worked when it left the production line.

I've already opened a ticked, waiting for someone to reply me, whilst i i tried to write here...maybe someone could have some idea how to fix this  

I will try to open the monitor and see if is all ok...I hope to not break anything ahah.