Originally Posted by Patrick Murphy
Have you noticed any major heat coming from the unit because after reading the complaints that have popped up lately, I went over last night after 5 hours of use and felt the top of the 818 and it was only slightly warmer than room temp. I don't normally run it very loud (around -25 for TV and -10 for Blu-ray) so I'm not really pushing it and I have it completely open for air circulation. I'm just wondering if the failure coincides with signs of extreme heat from the AVR.
It would be pure speculation on my part as to whether or not heat contributed, but it did seem to run hotter than seemed healthy. But, there are other reports in this or other thread showing an 818 on an open air shelf, yet it was still said to lose HDMI. Is that you? :-)
My unit definitely runs warmer than room temp, although I have not measured it. It does sit in a Salamander rack, with an open back and perforated front doors. The right side of the unit opens to the right half of the rack. The left side is closed off.
I have varied the space above the unit to increase the amount of ventilation, and that did seem to help it run cooler, or perhaps the correct words are "less hot". When I had less space on top, the 818 would be too hot to touch. I even went so far as to install an outboard amp thinking it would allow the 818 to run cooler still, but surprisingly to me, that had little effect.
So, all that said, if heat is a cause or contributor, I would have to cop to perhaps not providing adequate ventilation, but I would add the 818 went into the exact spot that my Denon 3808 was in, and after 6 years, it was and is still working fine, although it too was certainly pretty warm to the touch.