Have TV Questions? Ask a TV Technician
Hello and sorry you're having problems. In order to determine what's causing this- I need more info from you.
1) What exactly is the TV doing or not doing?
2) What is the full mode number off the back of the Samsung?
3) How long have you owned the set for please?
Do you need assistance with this?
The TV powering off on it's own does not have anything to do with Sleep Timer, unless you're seeing a sleep countdown message before it happens. When did the TV start doing this?
Does the TV show a countdown before it shuts off?
Okay, this is an intermittent fault in the TV in most cases. Please go into the TV's MENU and find the option to reset to factory defaults and click OK. If you can't find this option let me know.
The DirecTv remote has nothing to do with the TV settings- just grab the Samsung remote and go through the MENU to reset the TV. Not sure where you're having problems with the Samsung remote?
Okay let me know what happens.