Power part of 101Hero controller

Hollow evrybody!
Yesterday 101hero 3D printer arrived at home.
I wired it and turned on the power immediately, but the LED did not light at all.
The moteor doesn’t work either.
Please immediately request future instructions for replacement and inspection.

When I checked it, the electrical contact of the controller power supply was unstable, and the LED flickered.
This connection part is bad.
Anyway, I turned on the LED and changed the name of Test File of 101HERO Pylon 3D Printer.7z to 101hero, but it did not work at all.
I want to disassemble and repair.
Please tell me how to open the box.

This topic was transferred to internal RobotShop Support.