Help me find this chip, please

smalltownguy2

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So I have an Atari Tetris on location at the pizzeria here in town. The PCB decides to take a dump on me last week.

Big thanks to Salmart for getting a replacement PCB out to me pronto. I was able to use his board to help diagnose my bad board.

IMG_9300.jpg


On my bad board, it was THIS socketed chip that was bad:

IMG_9301.jpg


What is this chip? What does it do? Where can I find a replacement? How do I fix it?
 
It's an EAROM. Electrically alterable ROM. Probably for storing settings and/or high scores.
 
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