You have asked for help. You have not described your situation in any detail.
What have you tried so far?
What have you ruled out as being the fault and why?
What provides the pictures? Is it from an aerial, a dish, or cable? Is it from a separate receiver?
What is your TV connected to and what method/cables/sockets do you use to connect?
You stated that you have no picture on your TV. Have you ever had a picture on your TV from a broadcast or a separate set top box or recorder or anything else?
You state that you do not have a picture.
OK so are you are saying that you have sound but no picture?
I give up....
...at least until you decide not to be secretive about your problem and also show some desire about having it mended.
NS, July 2012