I'm a new customer with a ViP722K in use for 4 months. Room is 68F, air vents are unblocked, and the surface below the receiver is cool. Every now and then, more often lately, the fan will turn on at full (loud) speed and not stop until I hit the red reset button to reboot. Then it's quiet again until the next time (24-48 hours). If there was a mechanical/environmental-related heat problem before the reset, then the fan should continue to run at high speed soon after the reset. So that leaves either an overheating CPU due to a software problem, or a system that thinks it needs cooling when it doesn't. While the fan is running, there's no other apparent symptoms. It doesn't matter whether something is recording or not. Doesn't seem to bother the quality of things that are recording. Since I don't see other complaints similar to this one, what's the easiest path to a solution before the fan siezes and the box stops working? I have a feeling it may be hard to convince E* to swap out the receiver when there's no other symptoms.