Im new to this got a Vellerman K8200 2nd hand last week
i managed 3 prints before i wanted to remove the led lights from around the frame
after doing this the only control of the printer i have now is the hot bed and the extruder temperature
i cannot seem to control any axis
ive tried on repitier software via usb and online
ive tried it on my pc (originally working) and my laptop (same results)
ive checked every thing is plugged in
ive uninstalled the software and re installed it
Well, begin from the begining, maybe you sould verify all wires going to the main board.
If all are ok in continuity, maybe the main board is out of order ?