I have a 652 unit suffering frequent reboots. The PSU has been recapped, to no improvement. That PSU was then swapped with an identical unit that has had no symptoms in 6 months runtime. Issue still occurs. I just today put a fresh image on another hard drive, and it just rebooted on me again. I've never seen one that couldn't be fixed with a hard drive, or PSU caps. Any ideas, or is this one just sadly fit for the recycle bin?