premise: I ' m hoping someone has an idea of what might be causing this problem ? My set is getting strange color distortion in horizontal chunks that move and disappear then reappear . It started out in HD sources only , but now shows up on SD sources as well . This happened about 6mos ago and I took the back off , removed the lamp and blew everything out w / compressed air . What is likely happening to my item in this passage ?
hypothesis: My TV is not outputting HD anymore which is why I bought it .