Major Havoc X issues

dutchman

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Can anyone point me to the issue here? The game looks and plays great except for issues with X coordinates not lining up. This is a reproduction board with everything socketed so we did the quick and easy swap X and Y ICs for both before and after the DACs and nothing seems to have shifted the problem. I'm hoping someone will be able to point me to the right circuit to focus on. Thanks.

View attachment IMG_1304.jpeg
 
Can anyone point me to the issue here? The game looks and plays great except for issues with X coordinates not lining up. This is a reproduction board with everything socketed so we did the quick and easy swap X and Y ICs for both before and after the DACs and nothing seems to have shifted the problem. I'm hoping someone will be able to point me to the right circuit to focus on. Thanks.

View attachment 835745
AVG? Just eyeballing that, something looks like counters. The DACs Look okay there. Just offset as you say. Maybe the X Shifters also.
 
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The AVG is working good in another MH pcb. It doesn't mean we don't have a trace bridged or a bad connection.
 
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