Manufacturers occasionally update the firmware of their products to provide new features or security updates. Check For Firmware Updates of Your TV and Other Devicesįirmware is a type of software that controls the hardware of a device. If you follow these steps and find that TV channels are missing, you should re-scan channels on your TV to re-tune your antenna. These steps effectively reset the software of the device. Turn off your television or connected device.Ĥ. Often we turn these devices off when not in use, but this doesn’t mean they’re completely shut down.ġ. The same goes for set-top boxes, media players, and similar devices. These days many TVs have an operating system or internal software that requires an occasional reboot to function properly. This eliminates the possibility of a faulty HDMI port as the culprit. If your TV or external device has more than one HDMI port, try plugging the cable into a different port to see if this brings back your channels. Even if this doesn’t fix the problem, it’s worth trying this as a first step. You might also use the input or source button on the TV’s remote control to cycle through the different input sources (such as HDMI 1, HDMI 2, AV, etc.) to confirm your TV’s getting the right source. To ensure the cable’s not a fault, try using it on a different device. Verify the cable is correctly plugged into both devices using the correct HDMI ports (if there’s more than one) and that the cable itself isn’t worn or damaged. Verify Your HDMI Cable is Correctly Plugged In Check whether this cable is faulty or incorrectly plugged in. If your TV antenna is connected to an external media device (e.g., set-top box or media player like a Tablo) rather than directly to your television, then that device is likely connected to your TV via an HDMI cable. It’s therefore important to do a quick process of elimination (in sequence!) to quickly identify the origin of the problem. If you’re using a TV antenna and you see this message, it may have something to do with your antenna, but then it may also be caused by something else. A “No Signal” message on your television (or a blank screen) simply means that your TV is no longer receiving signals from the designated input.įor example, if you wanted to watch TV from a connected media player, and you switch the media player off, then you’ll see this message displayed on your television.
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