New DSR704 dies

Bearymore's picture

Igot a refurbished DSR704 about 3 weeks ago, added a 200Gig hard drive, and enjoyed the Tivo experience for almost 3 weeks. Then the unit froze right in the middle of watching a program. I powered down, and waited a few minutes. When I tried to power up, the fan ran, but the hard drive did not power up and the power light on the front of the unit did not go on. I checked the hard drive by reattaching it to my computer where it powers up just fine and is recognized by the bios. It doesn't power up in the Tivo, though. 

 Is the unit toast or is this something that can be fixed by some judicious tweaking?