Geeetech

i have already tried that and that didnt work

Also one of my stepper drivers is pretty warm compared to the other ones even if i move it from one socket to another

So i bought an A20M second hand. It powers up the lcd screen turns on with nothing on it, the power supply is reading back 24v. I cannot connect it via usb to computer as it doesnt even know it was plugged in and yes the usb drivers are installed. Is this a Bad control board? or just one with no ...