Try a reset, then try reconnecting to wifi.
Follow these steps please.
Start up your television and press the "Menu" button on your remote control.
Navigate through the menu options with the left and right arrow keys until you find the "Setup" sub-menu.
Select "Reset" and press the "Enter" button. If you've set an access code--referred to as a "Secret Number"--for parental controls, enter it with the number pad on the remote control and press "Enter" again.
Highlight "Yes" using the left or right arrow key and press "Enter."
Select "Yes" again when prompted that the television will restart and press "Enter." The TV will then display "Now Initializing" and the power will shut off. The television will automatically turn back on, restored to factory defaults.
Yes,that is normal.