The Dead Pixel Test launches an interactive sequential fullscreen test cycle to locate defective transistors across liquid crystal (LCD) and organic light-emitting diode (OLED) displays.

### Sequential Color Cycling When you start the test, the tool takes over the entire viewport with solid color washes in a five-step cycle: 1. **Black (#000000)**: Reveals hot pixels (permanently bright white) and stuck individual red, green, or blue subpixels. Also highlights backlight bleed on edge-lit panels. 2. **White (#ffffff)**: Reveals completely dead pixels (dark or black dots) where the transistor fails to open. 3. **Red (#ff0000)**: Evaluates primary red subpixel arrays across the full panel width. 4. **Green (#00ff00)**: Tests primary green subpixels under high-contrast luminance. 5. **Blue (#0000ff)**: Verifies blue subpixel function across all display quadrants.

### How to Inspect Your Display Click the Start Dead Pixel Test button to expand the test slide to fullscreen. Click or tap anywhere on the screen to step to the next color slide. After completing the five-color sequence, the test loops back to black. An exit button in the top-right corner allows you to close the fullscreen view at any time.

### Local Browser Execution The entire test runs locally in your browser using standard full-screen viewport styling. No software installations, plugins, or telemetry requests are used.