Hello antlisa02:
First lets try a hard reset, that means unplug your tv from the outlet thats providing power to your set. Leave it unplugged for at least a couple of minutes. Plug it back in and hopefully your TV has reset itself.
Other than that you might have to have it professionally looked at.
Here is a link for your manual, maybe it might help you.
"CLICK HERE"If this helped just click the thumbs up.
Your FixYa team member, Peter N.