I would like to know when the cooling fan should kick in. The current temp on my unit is 114 deg F. I have never seen the cooling fan on. Is there a certain temp when it kicks on? I've had the unit for about a week now. (i've been away from Directv for about 8 months or so.) 3 days ago the hard drive had an error 3004 with over 2000 errors. I am currently running on an external drive because it took well over an hour just to get to 1% complete on the disk repair. Will it be in my best interest to ask for a replacement unit?