I have a BC18Z I have for connecting the VAXstation to the monitor, keyboard and mouse. With this cable, a red hue across the whole screen flashes on and off about once a second, the other colours are fine and the screen is legible. There is also a thin dark line that scrolls up the screen continuously. This happens on two different monitors. I don't think it is the VAXstation itself either, because swapping with another cable the problem goes away. I tested continuity of the red wire and it seems fine. Are there any components in the keyboard and mouse connector block that could cause this? Regards Rob