It is easy to detected a faulty pixel(s) on TFT screen by using my TFT dead pixel test. Dead pixel are easy to detect with a total white screen, look for black-pixels. Bright-pixel are easy to detect with a total black-screen, look for white pixels. Stuck-pixels you can detect to use a color screen like,red,blue or green. For example a green stuck-pixel is easy to detect on a total red screen.