Magnavox TV TS2760 C101
I recently was given a Magnavox television and after watching for three or four hours, a black square appears in the middle of the screen. A series of #'s and letters will appear on the black screen. ( [E7D2]) I still have volume and the picture remains in the background(covered 90% by the black screen). If I change the volume + or - the screen will disappear for a brief moment but subsequently return. Please help!