Defective TV

There's something wrong with the TV at our house. Whenever I turn it off, it seems to come back on almost right away. Well, it's not every time, not during the day during the week. But in the evenings and on the weekends, really when everyone is home with me, it does. I'll turn it off and go to another room and when I come back, it's back on. Or in the mornings I just won't turn it on, but as soon as everyone starts rustling around and it's not just me awake, it will come on. It's weird!