Your arcade monitor; the picture tube known as the Cathode Ray Tube or CRT, was never designed to work as long as they have been tasked to do. You might be faced with a failing crt. There are a couple of things you should know. The aspect ratio is the width vs height of your monitor. This will determine the shape of your picture. All screens from the 80’s-90’s had a 4:3 aspect ratio. Now a days most all the flat monitors have an aspect ratio of 16:9 or 21:9 if we were able to adapt the input to allow your machine to work your image would be stretched and that will throw off your game.
There are video adapters to allow gaming (CGA) type of inputs to be scaled up to VGA. I have found that they work about 60% of the time. If you are lucky enough to find a 4:3 crt computer monitor or a 4:3 flat panel monitor you are in luck, but they are getting harder to find. Using an old CRT television is not recommended, unless you want to keep turning the power on to the tv when you start up your game. It will also create problems with getting to the power button without modifications to your cabinet.
But there is hope! When we change out a 19” monitor there is one company making fully compatible flat panel monitors. 4:3 ratio and with mounting brackets. It has a power button but you don’t have to worry about using it. In our opinion this is the way to go. Most every game will interface directly to the monitor without adapters. The only issue will be with early Nintendo arcade games. With these games we need to invert the video signal. We can get an adapter for that. Punch-out and Popeye will not work yet. But we are working on a new board interface that will allow these machines to work with the new flat panel monitors. If you need a new monitor contact us and we will find a solution that will keep your vintage arcade machine working.