The 27 inch was about 290 pounds so I know this one. When you buy your new set, ask them to take away the old set. No one here wants them and once in a while you find folk thinking they are worth selling. Yes, I think you have to give them 20 bucks to take it away (not the store you buy the new set but the buyer.)
Try (google these) Freecycle, Buy Nothing and the free section of Craigslist.
I have a ten year old Sony Wega TV that weighs a ton. I have recently purchased a plasma TV and can't even give the Sony TV away. It is too heavy for me to lift and move. How can I dismantle it, take it apart safely? Is there electric charge in it after it is unplugged?