I found this GBA (not SP), and the power switch seems pretty loose. I can turn the GBA on, but when I do the power light keeps flickering. It turns green right away, but it then flashes to red, and will fade on and off. At first it seemed to be ok to play, but I was starting a file in Mario and Luigi Superstar Saga, and then it just turned off.
To sum it up, is there anything I can do to fix this? Thanks!