Neo Geo:General Troubleshooting (AES)

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Solid Color Screens

If your unit displays a solid color on the screen, check the below table for its meaning.[1]

Color Diagnosis
Blue All tests passed, cartridge not detected.
Cyan Memory card error, blank card.
Red Work RAM error in 0x100000 region.
Green Palette RAM error in 0x400000 region.
Yellow Video RAM error.
Pink BIOS self check error in 0xC00000 region.