G-SPEED Shuttle XL with Thunderbolt 2 power supply died?

Hi everyone,
I have two G-SPEED Shuttle XL with Thunderbolt 2 of 24 Tb’s,
and one of them after being worked just fine as always, on the next day
simply just don’t turn on…actually does not do anything…simply died,
i tried with different power cables, different tb cables and different computers,
nothing…not even the slightest noise from inside…
i am almost sure, and i hope this can be the power supply of the controller…
this one is still on warranty so i already got things moving on with the reseller…
based on your experience, do you think i might be right?
never happened to me…and i just cant believe it…
thanks.
cheers.
n.