If your Sharp TV displays a “No Signal,” “No Input,” or “No Source” message, it means there is an issue with the set-top box or TV itself. The factors causing the problem are loose connections or damaged coaxial cables, channel tuning problems, faulty aerials or antennas, extreme weather conditions, service outages, etc. This article explains the reasons for their occurrence, including the measures to rectify the no signal issue.
Why Does Sharp TV Have No Signal?
| CAUSES | TROUBLESHOOTING FIXES |
|---|---|
| Problem with the external connection | Replace the HDMI cable or the port |
| Unstable network connection | Diagnose and restart the WiFi router |
| Glitches or flickers while streaming | Position the antenna correctly |
| The screen freezes and shows no signal | Power cycle the Sharp TV |
| Bugs and insufficient storage | Reset the Sharp Smart TV |
| Particular channels are not showing | Wait until the service outage gets fixed |
How to Fix No Signal Issues on Sharp TV
Here are methods you must follow to prevent your Sharp TV from showing a no-signal message.
Verify the Sharp TV HDMI Cables
It is common for your HDMI cables to become weak due to improper plug-in to the power source. In that case, it fails to detect signals for your Sharp Smart TV. To avoid that, make sure the domestic power supply is stable without fluctuations. If the power supply is improper, you must contact the electrician to resolve the issue immediately.
To fix the HDMI cable, seal your HDMI cables with a better insulator and unplug them from the wall socket. If the cable is damaged, replace it. If not, after 10 minutes, connect all the cables to the power source, and you will notice that your TV starts to detect signals hassle-free.
Restart the Sharp TV
Even critical issues on your Sharp Smart TV can be sorted out by restarting your device. Rebooting will fix the bugs and signal flickering within a limited time. After that, you will be able to receive signals without any interruption. So, perform a quick reboot on your Sharp Aquos TV to solve the no signal issue.
- Sharp Roku TV – Hit the Home button → Press Settings → Choose System → Select Power option → Click System Restart → Tap on Restart option → Click OK.
- Sharp Android TV – Press the Settings button → Select More Settings → Tap on Device Preferences → Choose About → Hit the Restart button → Click Restart.
- Sharp Google TV – Go to Settings → Choose System → Tap the Restart option → Select Restart again.
- Sharp Aquos TV – Hit the Power key on the remote to turn off the TV → Wait for minutes → Hit the Power button to switch on the Sharp TV.
Restart the TV Box
Sometimes, technical issues may occur within the set-top box so that you may see a no-signal message on the TV screen. To fix this, you can restart the TV box. Unplug its cable from the power outlet. If the TV box has a Power button, hold on it for 10 seconds. After a minute, plug the TV’s box cable back into the outlet and turn it on. Check if you are getting signals now. If not, try the next method.
Inspect Sharp TV’s HDMI Ports
If the HDMI is not working on Sharp TV, the TV’s HDMI port may have flaws. Eject the cable box’s HDMI cable from that port and reconnect it to a different HDMI port. Then, check if it works. If your Sharp Aquos TV still has no signal, the HDMI port itself may be damaged. If that’s the case, you should contact a certified TV professional to repair or replace the faulty HDMI component.
Adjust the Antenna’s Position
The signal issue may also be related to the improper positioning of the antenna. Due to sudden calamities, it is natural that the Sharp Smart TV’s antenna may have been altered. So, replace your antenna if it is severely damaged. Otherwise, set your antenna to a high location with a very strong signal strength. Then, just position the Sharp TV’s antenna so that you would receive good picture quality without any flickering.
Execute a Channel Scan
A proper signal from the antenna is essential to detect the channels. If the issue persists, it may be difficult to stream channels on your Sharp Smart TV. Once you set up the antenna on your Sharp TV, you can run a channel scan to refresh your device quickly.
- Sharp Android TV: Press the Home button on the remote → Select Channels → Press the Menu button on the remote → Tap on the TV Options → Click Settings → Hit on Channel sources → Choose CHANNELS → Tap AIR/CABLE → Run AUTO-SCAN.
- Sharp Google TV: Press Settings on remote → Select Channels & Input → Click Channels → Hit Channel Scan.
- Sharp Roku TV: Navigate to the Antenna TV on the home screen tiles section → Press the Star button on the remote → Click Scan for Channels → Hit on Start finding channels → Follow the on-screen instructions → Click Done.
- Sharp Aquos TV: Press Menu on the remote → Go to Settings → Select the Channel tab → Hit Auto Tuning → Click Preview TV → Choose Country → Tap Auto Tuning to begin.
Perform an Internet Speed Test
Sometimes, you may face bad signals in your home network. Because of the very low bandwidth, the internet signals may be interrupted. Remove if any electromagnetic devices are disrupting your WiFi connection. Still, if you wish to check whether your WiFi router provides high-speed, stable internet or not, you can undergo a speed test. This experimentally proves that your connection is stable and ready to use, as it confirms that there are no issues with the network.
Restart Your WiFi Router
If your Sharp TV has WiFi connectivity issues, you can try rebooting your WiFi router, which will be a better solution. To start the process, disconnect your WiFi router from the power source. After a few minutes, connect your router to the wall socket and input power source. This action confirms that your router is restarted automatically.
Then, connect your WiFi router to the Sharp Smart TV to start receiving signals. Otherwise, you can try altering the WiFi password and connecting it again for a quick resolution.
Update the Sharp TV Software
Sharp TVs may be prone to signal issues due to outdated firmware. To avoid this, you should update the Sharp TV firmware to the most recent version. If you have trouble updating the TV using a wireless network, load the software file on a USB drive and use it to update manually. If the issue is not fixed at all, try the next solution.
Reset Sharp TV to Factory Settings
It is the one last option to fix the no-signal problem. Try factory resetting the Sharp TV, as it fixes the bugs and flickers on your TV. The process differs based on its operating system.
- Sharp Roku TV – Navigate to Settings → Click System → Advanced system settings → Hit Factory Reset → Factory Reset Everything.
- Sharp Android TV – Hit Settings → Click Device Preferences → Tap on Reset → Hit the Erase Everything.
- Sharp Google TV – Go to Settings → Click System → Choose About → Hit Reset → select Factory Reset.
- Sharp Aquos TV – Tap on Settings → Press Setup → Select Reset TV → Enter password → Click Yes.
After resetting, set up your Sharp Smart TV from the beginning. After undergoing a factory reset, all the app data will be lost, and the TV settings will turn into a default mode. This is one of the best methods to troubleshoot the signal problem.
Contact Sharp TV Support
If the Sharp TV cannot detect signals after trying these methods, you will need professional guidance to fix the problem. You can try contacting the Sharp TV customer helpline for further queries.
| Sharp TV Support | https://www.sharpusa.com/support |
| Phone Support | 1-888-935-8880 |
| Email Support | [email protected] |
However, if your Sharp TV has a warranty, you can claim free service and have the faulty components replaced with new ones.
FAQ
If your TV doesn’t have any signal, change the input on Sharp TV, power cycle the TV, change the HDMI cable or port, and restart the set-top box.
Disconnect and reconnect the HDMI cable, change the TV’s audio output settings, check whether the device isn’t muted, change the source, and restart the device. Now, you can hear audio on your Sharp TV without issues.
If the TV screen is tinted blue, adjust the picture settings on your Sharp TV. If it doesn’t work, the TV may have a defective backlight. Contact the manufacturer and go to a repair shop to replace the backlight.
