This has been showing for quite a while. I'm attaching some pictures of the boards in the upper box.
The first two pictures are the boards that I took to Dallas and they checked them out and said they were good. The last picture I did not take this board. Is this the power supply?
Top photo is your Dotmation screen. They're rugged but fragile. If taken care of nicely, they tend to last quite a while and slowly degrade over time with burn-in and out gassing. There are no replacements for them. You may see 192x64 led reproductions for certain pinball machines that used the same style and size screen but they are not compatible.
Second photo is the controller for the screen. Strong board, never seen one fail to date.