Dead pixels can appear white, but they are more commonly black.
A dead pixel is a pixel on a display that is permanently stuck in one color, usually black. This happens when the transistor controlling the pixel fails, preventing it from changing color.
However, a dead pixel can also appear white if the transistor controlling the pixel is stuck in the "on" position, causing it to always display the brightest white. This is less common than a black dead pixel, but it can still occur.
If you see a white pixel that is always on, it is likely a dead pixel. However, if the pixel is flickering or changing color, it may be a stuck pixel, which is a temporary problem that can often be fixed by using a pixel refresh tool.
