capacitors

So I'm looking to start learning a little about electronics. I'm never going to be a master, but I would like be able to recap things and maybe solder a new i/o port or some RAM on a board. I've got a butane fueled soldering iron now, and I've been practicing with wires. From what I've read I...

I've been thinking about this one for a few months. How long do you guys keep your power supplies. Until they die? Or does it make sense to preventatively replace them? I have a 6 year old 1200W Silverstone Strider Gold (ST1200-G) that was pretty damned awesome when I bought it, but I have...