I recently purchased a second-hand MIB press brake with a Cybelec DNC 70 control system.

It is not working properly. It doesn't work on semi auto mode even after feeding in the material data. On manual mode it comes down and goes up once, then you have to restart the machine. Sometimes, it totally refuses to work. The back gauge is not working and the x axis doesn't appear on the screen.

Please advice what to do.