mitsubishi WS55413 red screen

Hi, I have a mitsubishi WS-55413 and the screen started going red. I would turn the tv off for a while and it would work fine again, but now it is red all the time. If I turn the color all the way down it goes from red to blueish for a little bit then to black and white. the picture in black and white is very clear still. Any ideas what might be wrong?