Hi guys, i'm hoping some TV expert/technician can offer me help and very gratefully solve my problem. I have the foolowing tv: Samsung CW28C33NS. Problem is as follows: A while back I basically went mad in the service menu (yeah I know i shouldn't have)... Anyway, whenever the tv is displaying an RGB input via scart (such as PS2, telewest digital in RGB mode) I get horizontal lines on-screen occasionally, sometime 2 onscreen at the same time, they move up and down the screen and anything above or below them is a different shade to the other side (as though someone is moving a piece of darker glass up and down in front of the tv). If there are 2 lines on screen they don't move in synchronisation and sometimes meet each other in the middle of the screen where they then stretch apart again (one moves up and other one down). I'm sure it is something to do with a setting I've altered that controls rgb timings or something, the issue is very annoying so i appreciate help (PLEASE!).. i've tried to describe the problem best i can but if you need more info just ask, but PLEASE HELP i've been told this forum is the best for tv techy advice. Thank you! Regards.