Originally Posted by DECJ
Well, if that's the case, then maybe I need to go with the fan approach, as that would more dynamically push or pull air through the unit. (And this is assuming heat is actually part of the problem).
Surely this is too cynical, but... I've had two hdmi boards fail in my 807: first in Sep 2011, and again not two months later. Both occurred after movie marathons. It was pushing Boston Acoustics VR2s for L/R, a Boston P450 center & inconsequential side and rears, typically at the (10) db studio volume. The unit was housed in a salamander cabinet with the back panel off, five inches of top clearance and the vented door always open while in use. After the second failure, I decided (with only a month left on my warranty) if a replacement hdmi board was the solution, I would reserve the next weekend for a Star Wars marathon, followed by a Matrix marathon, followed by... all while the 807 donned a wool blanket. While packed in a cooler.
Sorry to be diabolical, I just believe anything at this price point should be considered a durable good; the only thing that should supplant it is one's need for more power (which, at a clean 135 watts, is laughable) or one's desire to utilize technologies not available on the unit.
Fortunately, no replacement hdmi board was available. I received an 809 replacement within a few weeks. It's slightly bigger and runs much cooler.
I'm VERY pleased with the outcome, despite having spent $80 on shipping and only having the 809 for a few months. My initial belief is that the 809 is a quality durable good. The fate of my Onkyo loyalty resides in the 809. Assuming it continues performing, there's little doubt I will look outside Onkyo in the future. In the meantime, DECJ, consider digging through your closet to find a nice, heavy wool flannel shirt and a blanket, then queuing up two days of your most dynamic movies and concerts.