Tivo changed the THD power supply design.
I was playing around inside my THD (a new thread with details coming soon) and needed to verify the placement of a component. I remembered that when the THD was first released gizmolovers.com took it apart and took pictures. While viewing those pictures I realized the power supply in my unit is MUCH higher quality than the one pictured in the early production unit! The heatsink style and component count is immediately obvious. Pinout and connection type (14 pin molex) are the same so they should be interchangeable.
Take a look - Old unit first with production date of 15 jun 07 then mine which has production date of 12-aug-07.
More images of the early THD can be found here http://www.gizmolovers.com/photos/ti...review-photos/