@rick - Thanks for the reply. I am not very technical, so perhaps it is something other than screen burn, but that is exactly what it appears as. For example, if I have a 3reel game loaded, you can see the outline of the 5 reel game which appears "burned in". Then when I put on a 5 reel game, that games reels may be a different shape, and you can see the "burn" from the other 5 reel. In short, it was a mess. But, I am happy to say I replaced it and it looks fantastic now. What a difference!
@yoeddy - Thank you for the response. I didn't know this was a likely scenario re the nicotine. If you see my above response to Rick, I highly doubt it. I have already changed the screen so I can't shoot over a photo unfortunately.
I just get so concerned leaving the screen on for any period of time with credits in it now as the player attract won't activate. Hopefully I am working about nothing..