19" Toshiba, 18 months old, keeps turning itself off, then on again.
Batteries have been replaced, there is no way the remote is being touched accidentally. 4 tv's in the house, this is the only troublesome one.
Atmospherics??
If it automatically turned itself off after a period of time it wouldn't turn itself on again. It may be overheating, is it in a warm place? such as in the sun or are it's ventilation slots blocked? Try directing a fan at it, if the fault vanishes then you know where the problem lies.
Have you gone into settings to check the sleep timer? Our tv would be on when I would get in from work, sent an email to LG who tried to be helpful but weren't. I happened to look in the settings and the timer was set to switch on in the morning after we had all left for work/school.
I think it has adequate air circulation, it's on top of a metre high bookcase with plenty of space all round.
I have just checked the settings, no programme or sleep timer is selected.
When it happens, it goes off and then comes straight back on.
The remote sits on my desk next to the bookcase, so it's a good foot below the tv level.
Most peculiar, I will try the fan this evening.