Yaas. Our lesson from that (which Kate figured out, not me) is that you should turn off the TV with the hard on/off switch, to be on the safe side.

(One of my few complaints is that the UI for the alarm feature of the TV has, to put it mildly, poor UX -- took me ten minutes to figure out how to unset the alarm, mostly because you have to dig through five levels of menus to find it in the first place...)