My tv is turning red, blue, green and it switches to the dvd player while I am watching reg tv. I have also noticed a rectangular colored box appear in the upper left hand corner while watching tv. It blinks off and on a few times and goes away. Have seen that several times in the past. Tried a cd and now it is stuck in the player. Help....Have only had this tv a little more than 2 yrs and can't afford to replace it.