Advertisements as per my first post, regarding crashing, reboots, on the hd unit....i picked up another brand new hd unit, swapped out the new drive and power supply into the older hd unit i am having trouble with......guided set up no problem...10 mins later live tv via antenna , and then the unit reboots agian ???? do i have a signal issue causing all the grief i mention in my first post....or could the mjotherboard be the culprit ???? what can i do with signal via antenna, it just plugs striaght into the tivo ??? scratching head !