It's the power supply stupid. Well, maybe not always but I started to become suspicious for several reasons.
1. Some things always work like the display but other things fail like hdmi or I would get a hangup on startup
2. Problems got worse as the weather here heated up.
3. The report that plugging the power brick in somewhere else was a solution seemed absurd unless it was really temperature that was the culprit.
4. The fact that the unit was alive but malfunctioning is consistant with a marginal power supply.
Sooo, I just measured it. 12v open circuit (normal) and 9 v when connected to the 630 (not so good)
I replaced the brick with a 12v 3 amp power supply from Radio Shack and the box which I have unsuccessfully been trying to bring to life with a hundred reboot attempts has suddenly come to life and works flawlessly. Could this be a common problem?????????