I got an interesting message when I tried to turn on the TV for the first time today. The 625 receiver would not come on and the message said it was too hot, 122F and trying to operate it at this temp would damage it. It has been hot around here, about 96F and current outside temp was only about 80F when I tried to turn the tv on. The 625 dos not have anything on top of it but it sits on top of a VCR. I was about to call tech support but then it started to work again so I thought i would post my question here instead. Doesn't the receiver have a fan? I am wondering if I should be concerned about this and if the DVR or maybe the fan is starting to fail?