It's called "routing" and if you don't know how to fix games it's probably not a good idea.

If you can't fix them yourself you'll either break even or lose money hiring techs, and you'll eventually end up with exacerbated wear and tear on your games. Don't do it.

operating pinball machines is a very specialized service. it requires extensive knowledge and experience with all the things you just asked about, plus many others. and in addition to the long learning curve, it then requires dedication, time, patience, technical know-how, a lot of upfront capital, connections in the service industry, and lastly, passion if you want to be great at it. i'm not saying you or anyone else can't do it. but the question you just posed is tantamount to asking if we know what it takes to become a head chef at a 5-star restaurant, even though you have no idea how to cook. oh, and how often does food spoil??

i'd recommend asking an established operator for a job, or to take you under their wing as an apprentice. get your feet wet, before you try to dive in.

Make sure you are insured!!

Why do you want to do this, of all
things, out of the blue? Are you interested in pinball or is this just a business idea? If the latter, almost anything else is probably an easier way to make some money. Or some other kind of vending. Sorry if I seem discouraging, but it’s a really tough way to go if you are starting from little experience or knowledge.

Based on the questions you are asking you aren’t close to ready.

Better to find this out now than after investing $30,000 in equipment for a small route (or one location) while having your head under a playfield trying to learn how to fix something that could cost more than the quarters sitting in the cash box while a customer comes up to you asking what’s wrong and proceeds to tell you about their favorite game and their life story.