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OK, so what is the purpose of the optical audio OUT of the TV to the receiver? Wouldn't I have already done optical out of the HD cable box and the DVD player to the receiver? Why a separate one for the TV?

Could someone please explain the reason that one would run their video sources (HD Cable Box, DVD) into their A/V receiver rather than straight into their TV? The audio is obvious, but why the video? Inquiring minds wish to know!

Is there anything really "liquid" in a liquid crystal display... anything that could literally freeze?

I have a 50 inch Sony projector LCD bought recently for a summer home... given the high energy prices, I was thinking of shutting the heat off in the house for the winter (Massachusetts). Of course, I would unplug the TV so that the "instant on" feature is shut off. Question: would deep freeze...