My printer stopped working yesterday and for the life of me I can't get it working. It simply refuses to turn on. I live in a dorm, so i thought maybe a breaker got switched, but no. Changed outlets several times, no dice. I'm at the point where I'll be taking apart the printer (as the warrenty has run out) to try to see what's wrong. It's an HP Deskjet 3820. I'm just asking those of you who know about printers what I should be looking for when I take this sucker apart, and if possible where to find a schematic to help me on my way.