Happs may have something comparable to the door hinges. Like Snaaake said, check out a home depot.
I know that on my upright cab, regular hinges won't work. On my Balle/Sente cab, the cabinet is wood but the door on the cab in the front is metal. The hinges are welded to the door, then screwed into the wood of the cabinet from inside.
(The door I'm talking about is a front access door, separate from the coin door.)
On a coin door, the hinges are part of the whole piece. You just have to cut the hole for the entire piece.
If you're dealing with a metal access door, you may consider re-fitting the cab with a wooden door, there's tons of hinges that you could use then.
It's kinda touch to tell what you're looking for. Do you have a pic of work in progress?
Word.