I just read Baking an HP LaserJet 1522 Series back to life. I thought I'd share the post and what I thought about it.
First my comments on it:
Did you know that if your computer, printer or video card goes bad, baking the circuit board might actually fix it?
This post talks about how someone fixed a LaserJet 1522 by doing just this. The temperature needs to be pretty low, or the time needs to be very short but I've fixed a video card or two using this technique and I've heard of many people using it to fix entire motherboards.
The reasoning is that it "resets" some of the solder points so that data and electricity can flow again. Sometimes temperature changes, movement and other hard-to-notice factors cause these connections to be broken and the heat melts the solder and reconnects them.
You can read the whole story here: Baking an HP LaserJet 1522 Series back to life