Reddit mentions of 19 Inch Arcade Monitor Complete with CRT Mount for CRT Replacement, for Upright Cabinet Replacement.

As the unwritten code of Reddit has dictated, I must appear when paged to offer arcade related advice.

First things first, let's do some basic troubleshooting to determine what is exactly wrong. I'm assuming it has once worked for you and the screen not working is a recent of sorts development here, so correct me if I'm wrong and we'll go from there. You should be able to plug the game in and it operates as normal with the exception of the screen, you'll hear the sounds as you coin it up, the start button lights work correctly, and it will play "blind" as we call it. If that's the case, you're more than likely a culprit of an aging and failed monitor chassis. If you're handy with a soldering iron and not afraid of high voltage, there's ways to repair them good as new. If you're more of a artsy type or non-engineery person, luckily there's a few options available to you for repair.

1. Send your monitor chassis off for repair. There's a few people out there that do excellent repair work on these older monitors, Chad from ArcadeCup, and Buffett are two I'd recommend to anyone needing quality work. If you send in the chassis to them they'll want it to be separate from the tube. If that's the route you go, let me know and I'll gladly help you safely remove the chassis from the tube for the low low cost of an alcoholic beverage. The downside to this option is that it can be a very long turn around time, these guys are getting busier as the hobby continues to grow in popularity. It's also going to cut into your pocket to the tune of 150-200 bucks plus shipping.
   
   
2. There actually are a few local options for professional service too, I can't vouch for them as I haven't used either of them (A mechanic never goes to the mechanic), but they're Shaffer Distributing, and the goddamned place I can't remember the name of, sorry. Now grain of salt, it's been years since I know they offered that service, so if they say nay, maybe ask around at Gotcha Gapon or Old North, not sure if they have a guy or not.
   
   
3. Buy a new monitor! This also requires some deal of mechanical aptitude, as it involves getting the old one out and doing some rudimentary hooking up and modifying to get the new one to fit. It's also not as simple as running to Microcenter and getting a 19" LCD monitor to throw in there. Modern arcade LCD replacements are still fairly pricey, but they can be purchased online from eBay, Amazon, and specialty arcade sites for around $300 bucks. Would I recommend this route? Not personally, no, it just doesn't have that same eye-melting CRT radiation 1982 feel that the original monitors had. Unfortunately they don't make a new 19" CRT, so if you're not a filthy purist like me, go for the new tech!
   
   
4. Take a chance and learn a new skill. There's sooooo much information out there at our fingertips right now, there's thousands of YouTube tutorials, millions of forum posts, and tons of helpful guys out there that will assist you with any silly little question you have about your burgeoning interest in arcade restoration. Plus, if you fix your first monitor, you get exclusive access to the super secret Arcade Repair and Restoration Club, and I'll personally teach you the handshake!
   
   
5. I stopped doing housecalls a long time ago, but if you get in over your head with this, send me a PM. I also suffer from "Got too many things ahead of you" to promise anything, but I do have a soft spot for a Centipede.