maybe fixing somethings... "in the old days" consoles from atari? nintendo? had voltage regulator problems. typically something like a 7805 or 7812. Just a small 3 legged device that would provide regulated 5 or 12 volt power. That was a very common failure. Pretty easy to fix with just a .50 cent electronic part. But these days technology has progressed so rapidly in some areas of game console design - not just the smt revolution, which does require different soldering equipment than just a typical soldering iron...
I'd recommend a large clean metal desk, with a magnifying circle light. Special temperature controlled smt and other more specific soldering adaptor heads. Depending on how far you plan to go, perhaps some repair manuals, schematics if you can get them, and a good understanding of what signals are acceptable where on the boards, as well as what voltages. really depends on how far you go into it.. a lot of places just replace the entire motherboard in the event it's a defective mb, rather than attempting repairing the original motherboard. Goodluck.
