Turns pink, eh? That would be a problem with the TV, and it would cost more to fix it than to buy a new one. Has to do with the Red, Blue, and Yellow, and I think your Blue is gone. Something to do with the electrons, and the electron guns in the tube. Broken TV, it is only a matter of time until it is permanently Pink like that.
You can try to adjust the contrast and the hue when it happens. I dont know if it would fix anything, but it is entirely possible.