Ms Pac Galagfa Reunion Board Missing Characters

kjoel

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Ms Pac Galaga Reunion Board Missing Characters

I have a Ms Pacman Galaga reunion Board that is missing the characters.

When playing ms pacman the ghosts and ms pac are not shown on the screen, However the entire maze and all pellets are shown.

When playing galaga nothing is shown on the screen except the spaceship on the bottom of the screen. Both games play all sounds fine. I put this board in test mode and all is well. I reset to board to factory and it did not fix the character issues.

I also replaced the 2 roms and that did nothing too. Any ideas?? :confused:
 
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Great- Can you tell me how can I get this fixed? Call namco or does anyone on here know how or recommend someone to do this?
 
Can you post a high-res pic of the board where the chip #s are readable?
 
Yup its the pcb on epay for $30- Hell for $30 how cant u lose. I'd figured that the rom swaps would have worked but have not. I could always toss in a 60-n-1 but rather not at this time. Worst case I will send it to namco for repair. Pic uploaded-

The 3 small black chips on the pcb below the heat sink IN POSITION U16-U18 state:
ISSI IS61C256AH-15J
JV303331H 0041

Also J1 (10 pin connector center of boars between the 2 heat sinks) does not have any jumpers on it??? Dont know what thats used for


On the pcb too it states reset but I have no idea on how to do this- probably have to short the pins some how
hope that helps ya
 

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Hard to say without putting a logic probe on it, but I'm thinking it's either a bad SRAM chip or one of the surface mount chips needs reflowing.

RJ
 
Damn I dont own a logic probe. Maybe if I can figure out how to reset the pcb for the time being
 
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