Check to see if your set has a reset control for the electronics. If that does not do the trick, see if you can access those controls on the tv itself. If not, then you have an issue with the electronics of your set. Probably an issue on the main board.
Answers & Comments
Check to see if your set has a reset control for the electronics. If that does not do the trick, see if you can access those controls on the tv itself. If not, then you have an issue with the electronics of your set. Probably an issue on the main board.