Pac Troubles with Pictures.

jeff412

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Just got a new pac cocktail. I've replaced all of the eproms and finally got it to somewhat work. The game plays but the video and sound is messed up. The sound just beeps and boops. Attached are a couple of photos of what I'm seeing. Any suggestions?

Jeff
 

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A little more information. I am testing this in a working upright Pac-Man cabinet. The self test shows Memory OK. Does the cocktail version have anything different in it?

Jeff
 
Replace the socket that the VRAM addresser plugs into. If that doesn't fix it, report back.
 
Would the V-Ram addresser affect the sound?

Jeff
I would replace the vram socket and rule that out.
Check 1H and 1F. The graphics issue looks familiar but not the streaking on the screen. I have seen this issue twice where it also made the sound tinny sounding.
 
I changed the socket on the V-ram addresser and on the sync bus controller. Still no good. It's exactly the same. I still need to check 1h and 1f. How should I "check" them?

Jeff
 
I finally gave up. I've decided just to send this one to Riptor and get him to fix it for me. Probably something simple, but I can't find it.

Jeff
 
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