Double dragon Sprites graphic issue

jfs9999

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Nov 21, 2016
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zerty, paris, France
Hi everybody,

This is a picture about an issue with my double dragon pcb ( sorry for inversed picture) :





As you can see, sprite character is wrong. One part of the character isn't at the good position.

I think that a 74LSxx is bad on the video board, bu don't know where to search.

I hope for some help...

Thank you very much
 
Swapped video board with another double dragon game but still the same issue.

I can say that the issue is on the cpu board.
 
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