[ColanderCombo]

Success!
Huzzah!

Using the markings provided above, I replaced the missing and damaged components on the back of the system controller board and the blower speed is now correctly sensed and I've been able to boot the system.

I had some odd issues with the RE2 pipe, but after some reseating and board swapping I have a mostly working system.

I have had two seemingly random 'POKB FAIL's w/instant poweroff; one after clicking the 'reboot system' option in the system management window, and the other while running the atlantis demo. I don't think I have enough data to guess whether this is indicative of some other component failing or that there's still a problem with the system controller. If I keep experiencing POKB's I'll double-check the controller.

Now to debug the somewhat flakey RE2!