we have a 32in. samsung HDTV. it's approx. three years old and so far we
have not had any problems with it.

the problem is, this morning the tv turned on fine, however when we went
to leave the house it would not turn off, so we had to unplug it.
it did not turn off by pushing the power button on the tv or or by trying
to turn it off using two of the different remotes that usually work with
it.
neither did any of the other buttons on the front work nor the buttons on
the remote. the tv didn't react to any buttons pushed, not the volume or
the channel buttons, or the button to switch it to tv/video, etc.
when we came home, i plugged it back in and the tv turned on. i decided to
try the buttons so i pushed the power button on the front and it turned
off. however, when i turned it back on by pushing the power button again,
it turned on but no picture came up, only sound. also, it wouldn't turn
off by pushing the button again.
so i unplugged it again, and then replugged it back in. the tv turned on
again and the picture was back.
this time i decided to try the remotes so i pushed tv/video on one of the
remotes (this was while it was still somewhat in the process of turning
on...the power light on the front of the tv was still flashiing). i pushed
a button and the tv/video menu came up and then vanished almost instantly,
about the same time as the power light stopped flashing. now, once again
none of the buttons are working.

does anyone have any idea what could be wrong?