Dead Pixel Tester, with display tests. NEW VER 2.50 – TFT screens have thousands of pixels, on a 1024×768 monitor, there are three cells for each pixel – one each for red, green, and blue – which amounts to nearly 2.4 million cells (1024×768x 3 = 2,359,296). There’s only a slim chance that all of these will be perfect; more likely, some will be stuck on (creating a “bright” defect) or dead (resulting in a “dark” defect). DPT was written to help me check my own screens (Couldn’t find one that worked across multiple desktops so had to write my own!) by cycling through the three primary colours used (red,green,blue) and all on (white) and all off (black).

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