![]() Interference (from other electrical/electronic devices or cablesĪ simple test to check if your HDMI cable is exceeding the distance of your AV system is simply to temporarily move your devices closer together and reconnect the system using (tested!) shorter HDMI cables. But after installation there are additional factors which may affect the signal performance: ![]() We always recommend testing your HDMI cables and devices prior to installation. Though we do offer some general guidance on HDMI cable distance limitations, there are a whole host of technical and environmental factors that can affect the performance of your HDMI signal/cable and therefore, the distance your signal will transmit. Is there a standard HDMI cable length limit?Ĭhecking the cable distance/length is another HDMI troubleshooting tip. So if you drop down the resolution on the source, this may then give you the image on the screen. If the source is giving the incorrect resolution and is too high for the screen to handle, you're likely to experience signal drop out or no display atall. It's important to check that the HDMI output resolution of your AV Source device matches that of your TV/screen resolution. This is common if you are plugging and unplugging the cable regularly. A simple HDMI cable tester might tell you if the cable is wrong or you can simply try another cable and hopefully this will rectify the problem and give you the image that you need. The most common course for a problem is a bad connection between the HDMI cable and the device. Or the HDMI cable has failed or been damaged. Either it's brand new and some things don't work straight away out of the box meaning it could be that the cable is not working. If you are still having HDMI signal problems after going through these tips, it could be a faulty HDMI cable. HDCP handshaking issues are problems with Video or Audio on your display (Most commonly caused by a High-bandwidth Digital Content Protection (HDCP) encryption. HDMI / HDCP Handshake issues occur when the source doesn't accept the keys from HDMI Distribution equipment.
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