When your Sharp smart TV shows a No Signal error message appears due to wrong input selection, faulty cable, wrong connection, malfunction of the source device, or outdated firmware. Let’s get started with the solutions one by one.
Troubleshooting Sharp TV Shows No Signal?
Check HDMI Port And Cables
- Loose cables can cause disruption in the signals. Double check if the cables are firmly plugged to the device and the TV.
- Also, inspect the HDMI port and cables thoroughly. A damaged cable or HDMI port will not transmit the signals.
- Clean the port with a soft brush to make it dust-free.
- Connect your TV with the device via a new HDMI cable to see if the problem persists. If it does, try the next solution.
Change HDMI Input Or Input Port
If you have selected a wrong input on your TV than the one on which your source device is plugged in, your TV will not receive any signals.
Ensure you have selected the right HDMI input on your TV. See the HDMI port’s number at the back of your TV and select the same HDMI input on your TV by following these steps.
- Press the Input button on your Sharp TV remote
- The input menu will appear on the screen
- Press the Input button again (you can also use the arrow key) to select your desired input and press ‘OK’
Furthermore, you can switch the device to another HDMI port, e.g., if the device was previously connected to HDMI 1, switch it to HDMI 2 and select the corresponding input on your TV. It will resolve the problem if the issue was with the HDMI port.
Switch The HDMI Cable Ends
You can also reverse the connection. It means, plug the HDMI cable’s end into the device that was previously plugged into the smart TV and similarly, plug the cable’s end into the TV that was inserted into the device’s port, before.
Check Source Device
Check your source device (gaming console or cable box) if it is turned On and working properly. You can check it by attaching it to another TV. If it does not work on the other TV too, it means the problem is in the device and not the TV.
However, if it works adequately with the other TV, it means you need to try another troubleshooting technique. Also, check your TV’s and source device’s display settings. Incompatible resolution and picture settings can also create display problems.
Power Cycle The Devices
Sometimes when using a set top or cable box, the provider updates the firmware without letting you know. Your device occasionally does not integrate with the settings immediately and you need to restart the device to adjust to the new settings. Also, usually a minor glitch can cause disturbance in signals. For this:
- Power off and unplug both your devices – TV and the source device like a cable box or set top box.
- Wait for 5 minutes
- Power On the TV and after 5 seconds power On your source device.
Antenna Not Working
Sometimes malfunctioning of the antenna shows a ‘No Signal’ message on your TV. Besides checking the antenna’s position and cable connections:
- Inspect your antenna if it is damaged by any harsh weather conditions.
- Ensure you have installed the right type of antenna for your TV. If it is suitable to catch signals from the broadcast tower and if it is compatible with the signals you are trying to catch.
Rescan The Channels
If you are using an antenna or cable and not receiving any signals, you must rescan to get local channels. For channel scanning:
- Press the ‘Menu’ button on your Sharp TV remote
- Go to ‘Setup’/’Channel Setup’ depending on the TV model
- Select your signal source – Antenna or Cable
- Start a ‘Channel Scan’
- The TV will automatically scan for all the available channels.
Note: Antenna users might need to adjust the antenna’s position for better reception.
Bad Tuner
There is a possibility that the tuner inside your Sharp TV might have gone bad. You can opt for a replacement board. Also, you can get an external tuner to catch signals. Contact the Sharp experts for this purpose and get professional help.
Firmware Updates
Sometimes your TV needs to be updated. Due to outdated firmware your TV fails to receive signals.
- Press the ‘Menu’ button on your Sharp TV remote
- Go to ‘Settings’ -> ‘Setup’ -> ‘Software Update(Net)’
Factory Reset
If nothing works, as a final resort, perform a hard reset. Here is a complete guide reset a Sharp TV.
Sharp Aquos TV No Signal
If you are getting a ‘No Signal’ message on your Sharp Aquos TV, you can try the same tricks we have mentioned above. Solutions for Sharp TV and Sharp Aquos TV are the same.
I have mentioned all the possible troubleshooting tricks you can try to solve the ‘No Signal’ issue on your Sharp and Sharp Aquos TV. However, if nothing works, then you must contact the Sharp customer support team and seek professional guidance.