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Video Game Repair/Stargate CPU Board


Judder wrote at 2012-11-15 14:01:05
RAM chip 1 on bank 3 (what the 1,3,1 error means) is the first chip checked by the diagnostics, so is probably more likely that the +5V power isn't getting to the chips correctly, than the RAM being dead.

The best way to check is to swap the RAM at 1,3,1 with another, and see if it passes the test.

If you have time, remove all the RAM and then add them back in one by one from bank 3, chip 1 along.

However would suggest you check the connector at the bottom left of the CPU board as this carries the power, and if it's not connecting properly will show the behaviour you are seeing.

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I can answer questions on Arcade or Home Console repair or modification.


Repair, rewire, modification, rebuild, restore. (I repair numerous business and private arcade/pinball machines in my area of the state. I partner with a shop that stocks older console based systems and games, I am the one that repairs them back to working order.)

Have been building, customizing and repairing all types of arcade games since 2004. I have been repairing and modifying video games since the late 80's. (Most of my knowledge is self learnt and following others that have trailblazed in the industry.)

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