To perform a factory reset please follow the steps below using your remote (while in DTV mode):
Press the 'Input/Source' Button.
Press '2, 5, 8, 0' on the keypad of the remote.
Scroll down to "Reset All" and press "OK".
Select "Yes" and press "OK".
This will turn your TV off, completing the reset procedure.
Please turn your TV back on, and scan the channels again.
If this does not resolve your issue, please see 'TV Troubleshooting Guide' for further assistance.
If you have any questions or concerns, please Contact Our Customer Care Team.