We're having an issue where the controller screen flickers random lines on bootup, we have to cycle the power several times on the machine to get the screen to work. Anyone else seeing this and how do we correct?
Try disconnecting the controller (with the machine off). Reconnect and reboot. If it continues, examine the point where the wires enter the controller itself. It's possible that they were "strained" at some point and you have an intermittent fault. While the flickering random lines are visible, line the cord up with the controller and "kind of" push in, wiggle a little. See if that changes anything. If it does, you've at least isolated your problem.