I purchased the above widescreen television only 5 months ago, and today the screen has gone small and inverted, and the settings (widescreen, zoom, 4:3, 16:9) all just change within this inverted box (which basically means the screen is a third of the size). Does anyone know what could cause this? Has the tube gone? Does anyone have any idea how I contact Sony because their website gives nothing away? I am a little frustrated and would really appreciate any help?