Chosen Solution
Up until yesterday my GameCube was working fine while playing a game with a Memory Card in Slot A. Today I went to play a different game, switching out the memory cards and the orange GameCube light flashes on briefly before turning off while the fan keeps going. However, if I take out the memory card it works fine…
Have you tried a different memory card and having the same issue? Sometimes the memory card can cause a short and turn off the device.