I have a Samsung 1080i hdtv and some how its on timer to come on and I can not get my TV on it has happened before with the previous owner but they do not remember how they did it and I have no owner manual neither please help

Do you have a model number for your unit? It might be possible to look it up online and download a manual for it.

Also do you have a "menu" button? Have you tried unplugging the TV overnight yet?