I have a samsung ln-t4053h that a friend gave to me because the tv would click on and off. I replaced a couple of the bad capactiors with the correct replacements. The tv now turns on as indicated by the light at the bottom but there is no picture or sound. When I press the channel/volume buttons on the tv itself it beeps but that is all. The tv stays on until i turn it off. What else could be wrong with it? Possibly the board that the audio/video cables go into is bad? Has anyone else with this companies lcd tv's had a problem like this?