I've owned my GBA SP since the early-to-mid 2000s. I recently found it and remembered the technical issue that made me stop playing it, which still persists to this day. When I boot it up, it looks blank. However, it's blank with vertical lines. The lines change as it boots up and loads the inserted game. There's nothing else wrong with the device that I can find. Also: 1) it's the AGS-001 model, if that helps; 2) I've provided 2 images just to give a better idea. Thanks!