Ms. Pacman PCB help!!!!!!!

[Oni2382]

I have a Ms. Pacman PCB and when I power it on I get a screen with garbled text and gibberish. Should I try reseating the chips or should I replace all the CPU chips on the aux. board?

[Kevin Mullins]

Can't hurt to try re-seating everything.

Useful site:
http://www.arcadegameover.com/pactrouble.html

[saint]

I have a Ms. Pacman PCB and when I power it on I get a screen with garbled text and gibberish. Should I try reseating the chips or should I replace all the CPU chips on the aux. board?

According to the PacMan troubleshooting guide, you should be looking at chips at:

5M, 6B, 6D, 6H, 6J, 7M, and 9C. Also if it's flashing instead of static, 6R and 6S.

I'm going through the same thing right now. Remove, clean, and reseat the socketed chips. Check ribbon connector as well. Make sure you don't accidentally put the sync bus controller back on upside down (the daughter card plugged in by the 4 socketed chips in row 6). Likewise with the VRAM daughter board (the other one).  Check fuses, and verify you're getting +5v on the board properly.

So far I've done all that and am still having issues About to replace my sync-bus card.

--- saint

[Oni2382]

cool I will. You may want to try swapping out the aux. board.  I did this with the other PCB I have and got it to boot right up.

[2600]

Not sure if it will help you Oni, but maybe Saint.  The sockets on PAC PCB's are pretty crappy and tend to cause problems.  It wouldn't be a bad idea to replace them.