I did notice something odd about my cable, though: sometimes there's a whiteish yellow band at the very top of the screen. I would think that the cable is just broken or isn't making good contact with the video connector, but the band is sometimes there and sometimes not. For instance, when I boot PSO, the SEGA and SONIC TEAM logos have the white band at the top, but the title screen does not.

NPC speech bubbles also cause the screen to the left and right of the bubble to become darker than normal until the bubble closes.