Hi I have a sony 28ls60, tosh sd100e dvd, sqart rgb cable to rgb input. Options for dvd ouput are set to auto (options are Pal or auto). Tosh is chipped to play multi region. On playback of ntsc disks when the picture is dark I get a thin white line on the top of the screen running from the centre to about 2/3 across. The line goes if the picture is bright! Altering picture settings makes no difference. All ok with Pal disks (amazing picture), worked ok with my old tosh tv with same setup. Any ideas?