My thunderbolt display is not working with my MBP retina 13''

Hi,
     I just received both a new macbook pro retina 13'' and a thunderbolt display. Everything was working properly yesterday but today, I have no clue why, the thunderbolt display is not working anymore.
     . the power supplier for my laptop given by the thunderbolt display is still working;
     . when I don't connect my laptop through the thunderbolt connection, I can use the usb sockets as power supplier , for my phone, for instance;
     . as soon as I plug the thunderbolt cable, the usb socket is not feeding any more my phone, whereas the screen is not displaying anything.
     . If I take a look in the system report, in the thunderbolt tab, there is "no device connected"...
I restarted plenty of time my laptop, took care to reinitialise the SMC as well as the PRAM, and nothing changed. I also disconnected the thunderbolt display, waited few minutes (and more), but nothing changed, again the black screen.
Has somebody an idea?
Thanks

which model air do you have?
try both a pram and smc reset
plug the monitor into a different electrical outlet and a different port on your Mac (if you have multiple tb ports)

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