Can't Fullscreen in my LED TV

[Sreekar Dhaduvai]

I have a "LG 42LB5820 105 cm (42) LED TV". At first, I could go fullscreen on websites like vodlocker, coke and popcorn etc while in the internet browser. But nowadays, when I click on fullscreen, it tries to go fullscreen and then comes back to the window mode. Youtube fullscreen works fine though. What should I do?

 

[schwatzz]

Has the firmware on your TV been updated? Resize an image to view at its optimal size by
pressing Q.MENU or accessing Aspect Ratio in the PICTURE menu. Try tinkering with the different settings.

 

[Sreekar Dhaduvai]

Has the firmware on your TV been updated? Resize an image to view at its optimal size by
pressing Q.MENU or accessing Aspect Ratio in the PICTURE menu. Try tinkering with the different settings.

It seems that my software is upto date . And also I have tried different aspect ratios like 16:9,4:3 and Original. The problem still persists.