Geeetech

I tested psu and it works (12.09v on each wire):
https://goo.gl/photos/GRMLzgLSX2fu32HaA
https://goo.gl/photos/dkGVC5P4EZd8a7eV6

I also tested the two fuses and they are not burnt!

Very low voltage at meanchip 0,003v (I think it it the margin of error of my multimeter, true voltage must be 0v ...

Hello,
My gt2560 suddenly stopped working after a few minutes of use.
Everything seemed to be working properly but after a few minutes of settings, motors suddenly stopped and lcd displayed blinking black squares, then the lcd turned off.
So I unplugged the usb cable and turned the psu off!

Now ...