Gray Screen Test 4K — 25 Minutes | Uniformity & DSE Check

Gray Screen Test 4K designed to reveal dirty screen effect (DSE), brightness inconsistencies, dead pixels, and panel uniformity issues. This 25-minute fullscreen diagnostic video is ideal for OLED, LED, and LCD displays. Gray color testing is one of the best methods for identifying subtle screen defects and uneven brightness. 🛠 Best Viewing: • Watch in fullscreen mode • Use 4K resolution • Disable auto dimming features • Look for shadows, spots, or uneven lighting 📊 Technical Specs: Color: Gray Resolution: 4K UHD Duration: 25 Minutes FPS: 30 Audio: None 👉 Complete 11-color diagnostic playlist available on the channel.