Hitachi 50UX57B 50" Rear Projection Television "closed captioning away dish" Questions

away but comes right back. Used to be able to get to HD channels and it would not happen, now it happens on all channels regardless of the input, DVD, Cable box, direct cable. When a black box appears

...away. I have turned the tv off, and then back on again, but it eventually happens again. My husband tried to see what he could do, but we don't want to complicate things. I hope I have given you ...