I received my Harman Kardon two weeks ago and I finally had an opportunity to use it. Last night while I was watching the 24: Season 1, the display lights went dim. The fan kicked in as well. This happened twice during one of the episodes (the receiver wasn't working too hard-volumer around -30) Currently, I have the receiver housed in a component rack that has glass on the front and open in the back. I know the instruction manual says this receiver should be out in the open. Has anyone else had this problem before? Is there a problem with my receiver or is the problem due to where it housed. BTW, next week when I get paid, I plan on going to buy an open component rack, if that is what everyone thinks will solve the problem.