Article ID : 00281502 / Last Modified : 11/10/2023Print

HDMI tips and troubleshooting

    The High-Definition Multimedia Interface (HDMI®) is a specification that combines video and audio into a single digital interface for use with DVD, Blu-Ray Disc™, Android TV™, Google TV™, soundbar, set-top boxes, and other digital audio-visual devices.

    Review these HDMI tips first

    1. For a TV, the power reset or restart of the TV is a recommended troubleshooting step that can possibly resolve the HDMI signal issue

    2. Cable length - For 4K video performance. the length of the cable should be no more than 3 meters/10 feet. Longer cables may work, but the operation is not guaranteed.

      Note: In some cases, HDMI amplifiers can be used to increase performance on longer cable lengths.

    3. Cable type - Do you have the right type of HDMI cable needed to transfer audio/video signals between your TV and other devices?

      There are four types of HDMI cables and they are backward compatible (HDMI standard):
      • Standard (HDMI 1.0 to 1.2a) - Designed for basic consumer applications such as DVD players. The cable has a bandwidth of 5Gbps and supports up to 1080i (interlaced) or 720p (progressive) resolutions.
      • High-Speed (HDMI 1.3 to 1.4a) - Designed to transmit 1080p, 4K at 30hz, and 3D signals. The cable has a bandwidth of 10.2Gbps.
      • Premium High-Speed (HDMI 2.0 to 2.0b) - Designed to support HDR (High Dynamic Range) and 4K (60Hz) video signals and expanded color schemes.
      • Ultra High-Speed (HDMI 2.1a) - Provides the best signal transfer capability. The cable has a bandwidth of 48Gbps, transfers resolutions up to 8K at 60Hz or 4K at 120Hz, and supports new features such as Enhanced Audio Return Channel (eARC) and Variable Refresh Rate (VRR).
        • Note: When using High-Speed or Ultra High-Speed cables, the video output of the device may need to be set properly. See your for details.
    4. Verify that the HDMI cable transfers data:
      • Change to another port on the TV and then the device.
      • Connect the cable to another device and then to the TV.
        • If the cable works, then the HDMI port on the device or TV may be defective.
        • If there is still no signal transfer after switching ports and devices, then replace the HDMI cable.

    If the issue still occurs, additional HDMI cable tips and troubleshooting is available.

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