Alpha Geek: How to replace a dead power supply  by Rick Broida
Click to viewPower supplies die. You never know when it's going
to happen, but it's always at the worst possible time. You hit
the power button and your PC just sits there. Idle. Quiet. Dead.
At least hard drives have the courtesy to make that wrenching
death-rattle when the end is near. But not power supplies: They
just give up the ghost. Poof.  Fortunately, it's not impossible
to replace one on your own. It's tricky, yes, and a bit time-
consuming, but it's something any self-respecting lifehacker
should learn to do. Plus, it'll save you upwards of $100 at the
local computer shop, and that's always a good thing.  Here's how
to extract and replace a power supply and, in the process,
resurrect your fallen PC.  Step 1: Open up your PC  You gotta
break some eggs to make an omelet. Start by unplugging the cord
from the back of the power supply, then remove the case lid.
There should be a label on the power supply that identifies the
brand and model n