Hi I have a Samsung LE37S81B HDTV which is around 2.5 years old. It has worked fine until yesterday. I switched on the TV and it worked fine for around 1 hour, then the colour started changing to rainbow colours / bleeding? When i switch the TV off then on again it the colours are fine for a few seconds then it changes again to rainbow, greens purple and orange? Any help would be much appreciated.

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