I know this happens in Netflix but for Samsung, it varies with the model but I can't be exact. Look at all power saving and screen saver settings.
-> 800SAMSUNG in the USA is good to call if you can't find the model number for others to check the manual.
I am watching T V and a small box will come on the TV screen that reads Are you still watching, screen saver will start in 10 seconds, if I happen to be reading mail or in the kitchen making lunch etc. I then lose all sound and picture. It started doing this about a week ago and I do not know how to cancel this. Can anyone help me please? Frank.