Ah ha! After a week of no reboots it did it again today. 5 minutes after it re-loaded, the picture on Live TV, not recorded started to skip. The audio was fine, the video was not. After 15 seconds of that, it rebooted. I would have to say the HDD is going! Finally, an answer to the reboots. I'll have to try installing a 160 drive tonight! Hope it works, drive is out of a used R15-300. Any tips?
Well, I finally changed the HDD. I installed a used HDD from an R15-300, figured I would reconnect everything, power up, see what happens. TV back on in 5 minutes! Old playlist recordings showed up, not viewable of course, deleted those, cleared any series link recordings, all seems ok. Unit records, plays back...just wondering if I should have reformatted though...will post if unit reboots again...I hope not, I'm kind of attatched to this R15.