Check the input: Make sure the TV is set to the correct input source. Use the remote to cycle through the input options until you find the correct one. Check the cables: Ensure that all cables are securely connected to the TV and the devices they are connected to. ATT TV input does not work on my Sharp TV. Hello, I just received a new AT&T TV device and remote and I have programed as instructed. Everything is on the remote is working except the input selector bottom. I'm unable to change inputs on my Sharp TV. I have another set in another room with an LG tv and it works fine. 1. Switch on your TV by pressing the Power button on the bottom left side of your Sharp TV. 2. Press the Input button on its physical buttons port. It will change the Input mode from Cable mode. 3. If your TV is already in the Input mode, you need not press the Input button. 4. If your Sharp TV HDMI is not working, there's no picture signal, or the input isn't recognized, first ensure that the HDMI cable is plugged into the output port on the external device and the input port on your TV. 1. Open the Camera app on your Android or iPhone. 2. Point the smartphone's rear camera toward the upper part of the remote and Press any keys. For a hard reset: Unplug your TV. Press and hold the "Channel Down" and input" buttons on the panel. Plug the TV back while holding down these buttons. Seek assistance for this step if you have to. Keep holding the buttons until the TV powers back on. If it doesn't work, unplug the TV and try again. .

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