I have a 3 yr old Hitachi 43inch rear projection TV. Several months ago, the color picture changed. There is a very strong red color presence, and i cannot get rid of it. I tried to change the color preferences, but it did not work. Also, the volume indicator bar changed color from green to brown-red. Occasionally the picture spontabneously flips back to normal colors, but then it suddenly changes again to predominantly red. Hitachi customer support were not very helpful. Anyone has any thoughts???