Ms pac man screen issue

danpiraino1971

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Game plays. Black area of screen is white and maze is red. I have pictures for reference. Any clue as to what the issue is would be helpful.
 

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Yeah I read that. But I wish he would have elaborated a little. Does that mean 5C was removed from the board when he got it?. What does that mean? There is a 74LS194 at 5C. Does that mean that 5C is bad and needs replacing?

I would probably shotgun it to swap out 5C with a replacement chip. Otherwise it's a logic probe check to confirm it's passing data through correctly. You could always try taking 5C out to see if anything changes as well. Seems to be a pretty dead-on description of your issue.
 
I would probably shotgun it to swap out 5C with a replacement chip. Otherwise it's a logic probe check to confirm it's passing data through correctly. You could always try taking 5C out to see if anything changes as well. Seems to be a pretty dead-on description of your issue.

That's what I'm going to do. I'm going to socket it and get a new one in there.
 
5C the 74LS194 socketed and replaced is definitely the fix for this issue on my board.
 

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