Ms Pacman colors on the game don't seem right, ms pac is blue

infinkc

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Ms Pacman colors on the game don't seem right, ms pac is blue

i just finished repairing my monitor, but now im not getting the correct colors for the game. I do not think its a problem with the monitor anymore as the colors are all there.

The static screens have the correct colors for the characters, but the game play has the incorrect.

You can see in the video that Ms pac is Blue and the cherries are like a white color. On the bottom of the screen and on the menu you can see ms pac yellow and the cherries red, so the colors are all there.

Any ideas?

here is a short vid.
http://www.youtube.com/watch?v=rpsiWpcIRls

thanks!
 
make sure your Red, Green, Blue video inputs aren't bass ackwards


thats what i thought at first, but if you watch the video the colors are correct on the outside static screens, its just the gam play portion that doesnt have the correct color. If the colors were swapped i would think both would show the same colors.
 
Check your color proms 4A and 7F. You either have a failing socket or a bad prom.

wouldnt a bad prom affect the colors all together? i have the correct colors do show on the screen, just are different on the playfield.

I replaced 3a,3b,3d that did nothing, found on another site that this caused the same exact problem.

Any other ideas?

photoqd.png
 
well i had some time to look at the PCB closer. I found that the trace from 3D pin11 to 3A&3B pin 10 was broken. Fixed it and all the colors are perfect now.

pacmanpcb.jpg
 
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