Need help Wells Gardner 19v1001 monitor display problem

knight rider

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Need help Wells Gardner 19v1001 monitor display problem

Have a midway space invaders game. The monitor has the burn in it from the game. My problem is everything has a shadow on it, below it. When I look at the screen before it gets reflective on the mirror, its not aligned with the screen burn. I can actually see the screen burn not align with whats being displayed. Anyone know how to align it? Heres some pictures so you can see it. I tried the focus, no help, if I move the monitor, doesnt help,move the vertical everything moves, even the shadows... stumped..
 

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Ok, fixed but your not going to believe this>>>


Of course space invaders uses a reflective mirror for the image, well I turned the mirror around and its fixed. I never heard of turning a mirror around to get a different picture but ok. I noticed it when I tried tilting the mirror to see if I needed to shim it. I noticed it all lined up on the inside of the cabinet not the outside, so I turned the mirror around, and now its good, weird.....
 
I think when the reflective side of the mirror is on the backside, part of the light gets reflected off the surface of the glass first and the rest goes through the glass and gets reflected off the reflective coating on the backside giving you 2 images.
 
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