The High-Definition Media Interface (HDMI) is fast becoming the global standard for video connections. HDMI provides much faster video bandwidth and better color clarity than conventional cable, RCA or S-Video connections. The interface is already the connection of choice for manufacturers of high-end computer display adapters, LCD televisions and other high-definition video equipment. Unlike other video connection types, HDMI transmits audio signals as well digital ones. Occasionally, HDMI connections may fail or audio or video clarity may not be as expected. In most cases, correcting HDMI connections and port issues is a relatively simple process.
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Turn off the display and video output device. Disconnect the HDMI cable from both the display and the video output device. Inspect the cable ends. Carefully use the tweezers to realign any bent ends, then clean out any dust in the cable ends and HDMI ports on the devices with a lint-free cloth and denatured alcohol. Allow the denatured alcohol to completely dry before reconnecting the cables.
Plug the HDMI cable back into the display and the output device. Restart both devices. Check the audio and video signal.
Verify the input settings on the display are set to accept an HDMI connection. Also, ensure that the video output device is correctly configured. Refer to the user guide or manual for the device for specific instruction on how to configure your display or video output device.
Connect a new HDMI cable to the display and output device. Check the image and sound from the device to the display and attached speakers.