Can aliens communicate with us thro a tv?

What kind of words? What kind of symbols? It's quite possible that the television station (which operates by computers) somehow is inadvertently broadcasting some sort of ascii text from one of its terminals. (An example would be opening a Microsoft Word doent in Notepad. A few words might come out, but a lot of it will be symbols and numbers). Another possibility is someone trying to break into the station's signal to transmit their own broadcast (humanly). Do you have a gaming station hooked up to the TV? That too may be a cause if you just leave it on for a long period. There are several possibilities, but one thing that is HIGHLY improbable is that aliens are trying to Communicate through your TV set. If they have the technology to come trillions upon trillions of miles to earth, I doubt seriously that they would need something as crude as a TV to communicate. As for "spirits", yes that too is a possibility. Spirits (or demons) usually inhabit living things. If you are a bible reader, then you may recall that Jesus had to drive them from both man and beast. If a demon is actually controlling your set, I suggest you get rid of it.