Checking the Display Settings Sometimes the backlight is functional, but the screen brightness has been adjusted to zero. If the native interface works, the problem lies with the external device or the HDMI cable.
Understanding HDCP Errors and Their Impact on TV Screen Darkness
HDCP Errors High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection. Try disconnecting all external devices and using the television's built-in apps or a standard broadcast channel.
If a television detects an issue with the HDCP handshake between the source and the display, it will often cut the video output to prevent errors, resulting in a dark screen. Plasma and older LCD technologies can suffer from screen burn-in or pixel failure.
Solving HDCP Errors That Cause a Dark TV Screen
The backlight is the component behind the LCD panel that makes the image visible. Start by checking the power indicator light.
More About Why is my tv screen dark
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