I i replaced my own HDMI board and now 2 weeks in and no issues, but I notice that the chasie is still unusually hot. It is often hot to the touch even though I have it in an open cabinet with nearly 10 inches above it of free space, but it is still hotter than i would like.I think I may have found a very cheap solution i wanted to share with others and see.
On amazon I found a dual usb powered fan, which i am going to power from my xbox360 as the reciever has no native usb function, but any usb powersource would work.
these perticular fans have rubber gromets that come with them to dampen vibration and noise and I am planning to put them FACE DOWN on the grill directly above the hdmi card.
I know most people say they need to be face up to draw out the heat, but my thoughts are that airflow directly over the culprit cannot hurt and it will still force air out the front of the grill. it will be a couple days till they show up, but I wanted to offer it up as a solution, i think they are $20 on amazon.