I posted earlier about buzzing. Well my wife thinks I'm nuts and can only hear it within a foot. I really think I have some super sensitive hearing to that frequency to hear it further back. But with the BD player hum/fan whatever making noise, I can't hear he buzz. My kids don't hear, nor parents. Or I'm just imaging it! So don't let my comments deter you.
As for heat, I feel it some up close, and warm to the touch, but nothing scary or troubling or really unexpected considering I is a huge light source yet we all have light bulbs we dare not touch.
I have a temperature reader I use to measure air coming out of vents...I will aim it at the TV.