Black screen On my TV there is a black screen with a little red key in the bottom left corner there is sound that you can hear, when you go to change the channel you the remote will not work or the bottons on tv, I have unpluged the tv and has not helped

It really sounds like the child lock has been activated. This uaually blocks the keys on the TV, but the remote should work. If your remote doesn't work either, make sure the batteries work. If your remote for the TV can operate other apliances such as a VCR or DVD player, make sure it is in TV mode. If there are any buttons marked TV, VCR, DVD you could try pressing the TV button to set it in TV mode. If the To has a text-tv function there might be more than one button marked TV; one for setting TV mode as posed to DVD operating mode, and one for getting TV picture back when viewing text pages. -Chris