I rolled in this machine in my shop today, got it for a good price and I will change the control system later but for now I would like to try it as it is.
The seller stated that they only unplugged it and it was working when they did and I have no reason to dought them but when I try to start it (with the green button on the left side) nothing happends?
No screen, no leds no relay click, nothing.

Fans and stuff are running and some leds on the servo drives and vfd are lit.
The supply voltage and phases are correct.

Any suggestions?