Defpix

If you're looking for a tool to check for defective pixels on your LCD screen, Defpix - Defective (dead) pixels tester is a great free program to consider.

Once you start the program, it will display five different colors - red, green, blue, white, and black - across the whole surface of your screen. This allows you to easily inspect your screen and identify any areas where the pixels may be malfunctioning.

One great feature of Defpix is that it doesn't require installation, so you can simply run the program and start testing your screen right away. Additionally, Defpix works with multiple monitor systems, making it easy to check all of your screens for defective pixels.

It's important to note that defective pixels can come in three different types - hot pixels, dead pixels, and stuck pixels. Defpix can help identify any and all of these issues, ensuring you have a clear and functional screen.

Overall, Defpix is a simple and effective tool for anyone looking to check for defective pixels on their LCD screen.