Curious if the fan is user replaceable. I didn't even know I had one. I apparently wasn't looking. I did take the top off the unit to air compress clean it due to my cat liking to lay on my AV Gear. I have since put in one shelf lower lol.\n\nIt is a 5 minute job once you have the top lid off, as it is just a two wired quick connector and 4 screws. That's for the AvM70, likely the AVM90 as well but not the MRX1140.\n\nPeople have done the job on the MRX1140 too, such as the one linked below. To my surprise it has two fans, and the larger one show in the link is different than the one in the AVM70. The guy was funny in emphasizing the "Chinese" one was noisy.\n\nNew Anthem Receivers MRX 540 \/ 740 \/ 1140 | Page 102 | AVForums\n\nI am that anal when it comes to noise in my system. It's part of the reason why I went ATI for my front 3. The Parasond halo had tweeter buzz on my personas. I could only hear it less than 2ft away, but it annoyed me.\n\n\nYou are among the lucky ones who got the quieter (I would say near silent, based on mine) fan, so you can be anal and it won't matter.