I have been given an old Ferguson A59F TV, which i have decided to setup in the back room to use my retro consoles on, but have noticed a rather serious problem with the display. When using the scart input on the back of the TV, and using my modified Megadrive (which can be switched between outputing 50hz or 60hz) in 60hz mode, about 2 inches down from the top of the screen there is a whitish/greyish line roughtly 5mm in widith that runs right across the screen. This seems to push the whole screen down slightly and i think loses part of the bottom of the screen. If i flick the Megadrive into 50hz mode then the line disappears and the display is fine. Other than this the display is good, nice sharp colourful picture. Does anybody know what is causing this problem?, its like the TV is have trouble displaying a 60hz picture, my SNES console is US/NTSC so its 60hz and that has the same problem as the megadrive in 60hz mode so its not the console. Is there a secret service menu on this model TV that may be able to help with this problem?