When I was a child my father built a HO gauge simple figure 8 trainset, throughout the years it was expanded slightly with some lights, and three engines (one of which I am fairly sure came from the original tyco set, because I still have the transformer too). Back then, I wired up the swtiches, addded another board with some more track. Recently I went to resurrect the set, none of the engines work, it looks as if I get some power to the tracks, switches, and lights. I really want to get back in to this hobby, no only for myself, but possibly for my daughter (1 year old). I have a few questions where do I really begin to deal with this, do I deal with the power supply first? Do I try to repair the locomotives if they don't work, or do I buy new ones, if so which ones are good now a days. Also I would like to make this realistic, and really expand on it. I would like to look at photos to get ideas, where do I get information on how to do that? Thanks for any help anyone can provide.