1. Overscan: Overscan is a feature on some TVs that slightly crops the image to compensate for overscanning on older, non-widescreen TVs. This can cause the edges of the picture to be cut off on modern widescreen TVs.
Solution: Check your TV's user manual or settings menu to see if overscan is enabled. Disable overscan if it is enabled.
2. Aspect Ratio Settings: The aspect ratio of the TV and the video signal from the source device (cable box, DVD player, etc.) may not match, resulting in the image being stretched or cut off.
Solution: Check the aspect ratio settings on both the TV and the source device. Ensure they are set to match the correct aspect ratio for the content you're watching (usually 16:9 for widescreen content).
3. HDMI Cable Quality: A faulty or low-quality HDMI cable may not transmit the video signal properly, causing the picture to be cut off or distorted.
Solution: Try using a different HDMI cable of known good quality. Make sure the cable is certified for high-speed or ultra-high-speed data transfer.
4. Incorrect HDMI Port: If your TV has multiple HDMI ports, the one you're using may not support the resolution or frame rate of the video signal.
Solution: Try using a different HDMI port on the TV. Some ports may be designated as "HDMI 2.0" or "HDMI 1.4," indicating support for higher resolutions and refresh rates.
5. Incompatible Resolution or Refresh Rate: The resolution or refresh rate of the source device may be incompatible with the capabilities of the TV.
Solution: Check the maximum resolution and refresh rate supported by your TV. Ensure the source device is set to output a compatible resolution and refresh rate.
6. HDMI Handshake Issues: Some TVs and source devices may have difficulty establishing a proper handshake over the HDMI connection, leading to picture issues.
Solution: Try turning both devices off and then on again. You can also try unplugging and reconnecting the HDMI cable to facilitate a new handshake.
7. Software Issues: Outdated firmware on the TV or the source device may cause compatibility issues.
Solution: Check for firmware updates for both the TV and the source device. Install the available updates to ensure the latest compatibility fixes.