Usually when there is a pink screen, it's an indication that the source sending the signal to the television isn't set to send the signal through HDMI. It may be set to send the video component. Try switching the output of the source to HDMI Out.

Do you mean that the whites are more reddish than usual?

Sometimes it's a setting you can change on the control panel, for "color temperature". Other times something has gone bloieee in the circuitry and it's sending too much red signal to the panel. Check the color temperature setting on the control panel first.

either the age or signal