BLACK SCREEN TEST — 30 Minutes 4K UHD | Dead Pixel & Brightness Check

Black Screen Test 4K for OLED, LED, and LCD displays to detect dead pixels, stuck pixels, and backlight bleed. Full-screen 30-minute video for fast and precise monitor and TV diagnostics. Quickly check brightness uniformity and panel performance. Why Black Screen Testing: • Spot dead or stuck pixels instantly. • Identify backlight bleed and panel inconsistencies. • Ensure your display is fully functional. 🛠 How to Use: 1. Play in 4K fullscreen. 2. Turn off Sleep Mode / Screen Savers. 3. Monitor for the full 30 minutes. 📊 Specs: Color: Black | 4K UHD | 30 Minutes | 30 FPS | Silent 🔗 Full Suite: ➜ "[4K] ⚡ QUICK 30-Minute Screen Tests (11 Colors)" Black Screen Test 4K | Dead Pixel Detection | Brightness Check | OLED LED LCD | Full-Screen Diagnostic