The Onkyo TX-SR806 runs very hot. We knew this when we made our purchase 13 months ago, by reports from numerous reviewers. We thought we would be safe, because knowing this in advance, we gave it a lot of
breathing room. We were wrong!
After 13 months of use, it made a loud, explosive pop and flames shot out the top of the receiver. When quickly unplugged, it died down, but we are left to wonder if we had not witnessed the event, and acted promptly, if the burn-out would have been self-limiting, or if a fire would have started.
We purchased from Amazon. When Onkyo was notified, they validated there was a 2 year warranty, but claimed it was Amazon's responsibility. Amazon said NO, it was Onkyo's responsibility. So, basically we're receiving no help with this situation and have been refered to Amazon's legal department.
If you check out reviews on Amazon, and elsewhere, it is clear that this is a serious, potentially dangerous, defect, because the same thing has happened to others. A word of caution to all considering this product: BUYER beware!