Some time ago I acquired this Turtles PCB. The game was dead, I had a CPU problem, and after replacing and programming the EPROM, the game worked again. However, there's a problem with the video. The game looks fine in the intro and in each character's bio, but in the highscore and demo scenes, it looks bad, like some kind of horizontal lines that darken the image. I replaced the 74ls07 D20, E20, D22, and D23 color buffers, thinking one might be corrupted, but this didn't solve the problem. I also replaced the E2 and E23 TTLs without any changes. Does anyone know where the problem could be, or has anyone had a similar problem?
Any comments would be helpful.
View: https://youtu.be/NhGXI6Y2I48
Any comments would be helpful.
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