Hey Joker ,
I had mine setting on it`s base about 10" from the wall and the back would still get very hot after a few hours and extremely hot towards days end.
If you don`t find that over-heating is a problem with you 47" 8600 and you are happy with it , you may have hit the jackpot !!
2.5 " and with that much space behind the TV , that is probably why you are having good luck with it.
For me , it had no choice plus I had tower speakers on each side ( Note: this set up has NO effect on my KDL-40XBR2 ) , it may have needed more space for air to circulate. If that is the case then you might be good to go.
I don`t want to sound like a broken record ( fracture MP3 to you younglings ) , but the LM88600 is a great TV , IF you can keep it cool !
Sounds to me like you got the temp under control , so if your 8600 is running nominal then I would keep it , you could always get worse
I see no reason to NOT keep it !!
Best of luck to you and I`m glad to hear that someone has a decent 47" LM8600 !!
coobullets , the problem regarding the over-heat issue is that it drops out of white balance and after a few hours you would have to adjust contrast / brightness/ color - to compensate.
After being on for a few hours ( ok many hours LOL ) I would have to readjust it way to often , like very time I would change the channel .
, No fun
So I had to send it back.
BTW ++++ Mine had a build date sometime in March , if your have sets after March maybe there was a secret fix , one that firmware would not help and LG is keeping quite !
OK Take care , later !