Namco Classic Collection 2: Not saving service menu changes or high scores

SmokeMonster

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Namco Classic Collection 2: Not saving service menu changes or high scores

I have a Namco Classics Vol 2 PCB that won't save changes to the service menu. I've tried resetting it to default, and even those changes aren't saved after a reboot. High scores are also not saved.

This PCB uses an AT28C16 to save high scores. Is this the same chip that stores the service menu options? If so, would socketing/replacing the AT28C16 solve the problem? It's like the chip is read-only right now.
 
Last edited:
Is the black component marked ●330 a battery or something?

20160628_162632.jpg
 
Socketing and replacing the AT28C16 fixed the problem. The board detected the blank EEPROM and set it up at first boot. Pretty cool.
 
Bumping this old thread as my Vol 2 board has the same issue. Will not save any changes made to the settings menu. I was going to socket the chip and replace it like above.

But I can't seem to find this AT28C16 chip. Digit Key and other say it's obsolete?
 
Bumping this old thread as my Vol 2 board has the same issue. Will not save any changes made to the settings menu. I was going to socket the chip and replace it like above.

But I can't seem to find this AT28C16 chip. Digit Key and other say it's obsolete?
use at own risk:

I've found Mouser and Digikey are effectively worthless for this sort of thing also
 
Well I bought the chip per mecha link and I removed and socked the IC. Replaced it with the new/old chip and it fixed the HSS but it still wont save the menu settings? Manual is kind of useless. Is there a button you need to hit to safe the settings once your done in the test menu? Just trying to put the board on Free Play.
 

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