Re: Little Things sent to try us.
It may be that you have dislodged an internal cable or a circuit board connection somewhere. Unless it has a mild impact or a floor drop I can't imagine it has done serious damage and you may find someone who could open it up and give everything a good wiggle to bring it back.
The problem with TV's is they are regarded as disposable goods. They are not worth the effort of diagnosing or replacing individual components, its easier and cheaper to throw it away and buy another.