I was playing my old pinball machine today when the display started to malfunction. After several minutes, the dot matrix display shows only a horizontal stripe as shown below. The interesting thing is that when I move my eyes vertically over the horizontal stripe on the display, I am able to see words as if the screen is working properly! As soon as my eyes stop moving, it collapses back into a single line. It is as if everything is contained within this stripe on the display and somehow moving my eyes over it separates it out. The other interesting thing is that if I move my eyes up, then the words are displayed upside-down and mirror image. If I move my eyes down then the image is right side up... so strange. I was able photograph it by moving my camera across the display (ignore the multiple images) but it's difficult to see unless you zoom in. The second attached picture shows the words "free play" upside down and mirror imaged. [remember the display looked like image 1 in reality] The third image shows some numbers, again upside down and mirror image but a little more clearly than the previous image. I'm assuming this phenomena has something to do with the nature of the display itself. It is an old gas-plasma display but I know nothing of the specifics of the gas. I'm very interested in figuring out how this works. Does anyone have any ideas?