I noticed the same thing with my 7100 when I first got it but as far as I can tell it is normal. I took a keychain thermometer that I had and just laid it on top of the 7100 to test the heat and found that 90-95 is normal with the volume off and after watching a movie at what I consider a loud level the most I've ever seen is 112. If your running around that level don't worry mine has been that way for almost a year without problems. Hope this helps

Lasher