TV Repair Questions? Ask a TV Technician for Answers ASAP
Sorry you are having trouble sounds like you are using an aerial? or are you using something else like a satellite/cable box?or?
OK it does sound like you have a problem with that aerial or associated components of the aerial like the downlead any amp you may be using or the coax socket you need to verify this by trying another TV there just to verify , if that is bad too aerial/associated parts of it are bad, do you have another TV to try there?