Hi I have a Toshiba. Hi I have a Toshiba 36ZP18P colour television, approx 6 years old, it has

Question

Hi I have a Toshiba 36ZP18P colour television, approx 6 years old, it has just started today to a funny colour at the edges, almost purple/lilac/blue shades its as though the colour is closing into the middle. I have checked the leads in the back and they are all secure, I have checked the colour settings and no matter what I do it is the same. Hope one of you guys can help... Thanks Julie, U.K