I am now on my fourth DVR in 20months. All have been Scientific Atlanta units (two SA-8000 and two SA-8300 units. All were furnished by Cox. The first died within amonth, the second lasted 8 months, the third about the same. Is this usual behavior for these units?
It all depends on how hot the hard drive runs, if the box you have does not have a fan, you might consider adding an external one. (or if your renting and need a new one, a towel could help it's demise...)