Espian
If the intonation is not set correctly, accurate tuning on the entire fingerbaord cannot be recognized.
Could be an issue with the bridge. I assume you are talking an acoustic and not an electric. Electric guitars have adjustable saddles, where each string can be individually intonated. Most acoustic guitars have a fixed saddle and thus, I would recommend you have a qualified luthier examine and adjust the saddle on an acoustic.
What I suggest is that you discuss the matter with a luthier. You have to decide whether the guitar is worth putting more money into it. Ask them for a free estimate. If the work seems high, you might want to invest that money into a better guitar (which I can help you with)
PS .. wasn't that the same TV you were giving as a christmas gift to
www.fretmentor.com?