Hang / move large tv by myself? Is there a tool?

I used my sit/stand desk to take down my super heavy Sony Kuro plasma TV and it has been my computer monitor on the sit/stand desk ever since.  I originally installed that TV myself using a pair of ropes and pulleys and 2 hooks in the ceiling.  I left the hooks in the ceiling for ages thinking I would upgrade some day and the Mrs finally got tired of looking at them and had me remove them and patch the ceiling.  I didn't want to patch the ceiling again so that is where the bright idea to use the sit/stand desk came in.  Always try to work smart and not hard, lest you pay the price when your old.

Get a helper. Way too much can go wrong with a jerry-rigged solution. Even the big box stores who do this for a living send two people in the truck. If there were a safe way to do it with one person and a contraption, they would definitely do this to save labor costs, even if it were a very expensive contraption.

Let's see...so you'd rather spend hours putting together an apparatus for what is likely a one-time use, then figure out how to store it for the rest of your life ('cause you're a guy, and it might come in handy at some point in the future) than just ask somebody to help you?  

@fatdaddy2  There are a couple of problems with asking friends. 

1. New neighborhood in new suburb so I don't know many of my neighbors.

2. I need this done whenever I want.  I'm not sure how long it'll take me to do all I need to do behind the tv.  So it could be late night.

3. I enjoy making jigs like this and need to use my tools lest my wife continue to complain about them.

 Unfortunately, I occasionally find myself in a similar situation. If you do have the opportunity to get help, make dam sure they don't become a liability in the process! A lot of people have no idea how work together with another person and there is no time when an accident happens. Explain the maneuver Before it is being done.
 When there is no help and no other choice, I make sure that what ever plan I have is well thought out, often taking advantage of leverage, knowing that I can move an object in steps and not all at once. Making sure that the surface(s) used to help the TV down, are stable and dependable. It is not just the weight, but the awkwardness of the item in that the dimensions, lack of good handholds and balance of the weight of the item are taken into  consideration. Yup, get ahold of the heaviest end for best control.