Vertex K8400 deffected parts

Hello. After 1 week of forums chats tries assembling dessembling and all those things that goes with the assemblage of the 3d printer i finaly found the problem.
My main problem was that my vertex K 8400 1 headed wouldnt load the filament and after switching motors and cables all those thing suggested to do here i finaly found the problem. Its the small card ( little mother board you got five of them normaly with your 3d printer) as you will see in the picture below that is not working. No matter which Axis i put this that axis will not work. I can load the filament by swaping the card with another motors card but the that motor will not work
So my question is. What can i do in this case. Should i go to the shop that i bought the 3d printer for a replacement part. Do we have a warranty for the 3d printer.

I am so dissapointed

For defective parts you can go to support.velleman.eu/ for a replacement part.
Just to be sure. Did you check the voltage on the driverboard? Like described in the manual manuals.velleman.eu/article.php? … FTEDLAYERS

The voltage was checked and we got no voltage at all no matter where we plug the driver that motor wont work. sorry for forgetting to mention that.