Well, depending whats broken it also might be a super easy fix and since this is also somewhat similiar to what Im learning... (not an electrical engineer though)
Anyways, any good programs out there to log hard-drive activity, check health and so on? My computer's kinda slow and Im suspecting the HDD is the culprit. (maybe I should do something with all the tabs I have open, too)
You can check using DriveGenius, I believe. You can also see if an externally booted drive with the same stuff on it feels faster.
EDIT: Wooh, my 5,1 Mac Pro arrived fresh from eBay. Now comes the fun of swapping the quad-core Nehalem processor for a W3680 3.33GHz hexacore. Theoretically it's not going to be an issue since this model has processors with the integrated heat spreader as opposed to the custom Apple chips in some configs. Also my SO thought when I opened the little box the processor came in that it was jewelry She was disappointed...