Why won't the screen turn on even though everything else works well?

New unit, purchased about four weeks ago.

About two weeks ago the screen stopped working. The rest of the unit seems to be working well, sounds come out of the unit when I press keys, and I can toggle through different functions, however I’m working blind.

I tried to do a reset (COM while turning on + pressing 7 after ) however this didn’t work.

I tried to connect to my computer to then upload firmware, but unfortunately when I connect the unit (after turning on with COM + pressing 1 after) it doesn’t show up as a drive in my MAC. I’m not sure if this is a cable issue, as I’m using the one provided by TE.

The unit is still under warranty, but given that TE just announced they will discontinue, returning it would mean I will not be getting one back. Any help would be deeply appreciated!