Ultrastudio 4K mini defected - not powering on

Hi guys,

I have a blackmagic New UltraStudio 4K Mini that worked fine before. But today, when I am trying to power on it, it displays a black screen. I have checked all the cable and trying a thousand times to unplug and plug the power cable, but there is nothing happen.
This is the link of video : https://shorturl.at/BFGPU

Any idea?
Thanks in advance.

Hello there.

Under the power connector - I believe there is a fuse socket, right?
If you pop that open and look at the fuse or even better measure it with an ohm-meter.