is the old one broken? if you arent overly technical a NOS genuine bolt in replacement seems like the best plan.
http://pinball.co/Products/29699-power-supply.aspx looks like the right thing but you would need to ask them for specs to be sure.
I would be surprised if its not auto switching from 110-230V but the label on the box that you cant see in the bad photo would hold the answer.
