Sony TV No Signal Check The External Input (100% Fixes)

When you get ‘No Signal check the external input’ message on your Sony TV, you might be wondering what it could be and what’s causing this!


I was also a bit confused when Raju mailed me with this problem.

Raju wrote Homespoiler,

“Bro, we are dealing with a strange issue with our Sony TV. It was working fine but recently it showing ‘No signal, check the external input or select another input using the input button‘. We just tired! Watched tons of videos on youtube ! All are garbage showing the same things without telling how to fix. I even contact with Sony, but no valid respons. Do you know how to deal with this?”

Have a question or opinion like Raju’s? Send them here.


Well, this is a wide range of issues and in fact, 80% of users are currently dealing with this.

When a Sony TV displays ‘no signal’ and suggests checking the external input, there is an issue with either the source device, Signal transmission, or the TV itself.

However, In this article, I will break down everything about this and suggest exactly what you need to do to get back your TV in its previous state.

Here we go! Let’s dive into it…

Why Sony TV says ‘No Signal check the external input’?

My sony tv says no signal

I already mentioned this!

When a Sony TV displays ‘No signal’ message, it typically indicates that the TV is not receiving any signal from the selected input source.

Either there is an issue with the connection or the external device.

Here’s the more detail in case you need to know:

1. Incorrect Input Selection

If you have selected an input on your TV that is not connected to an active device such as a cable box, satellite receiver, Blu-ray Disc player, or gaming console., the “No Signal” message will appear.

For example, if you have selected HDMI 2 instead of HDMI 1 or Cable 1 instead of 2, you will get this message.

2. Weak Signal from Source Device

The message can also occur when there is an interruption or a weak signal from the source device connected to your TV.

This can happen with devices such as an antenna, cable box, satellite receiver, Blu-ray Disc player, and others.

How to Fix Sony TV No Signal error?

  • Verify the correct input is selected on your TV.
  • Ensure the connected device (cable box or satellite receiver) is turned on and not in standby mode.
  • Check the cable connections between the TV and the device, ensuring they are secure.
  • Test different HDMI ports on your TV.
  • If using an antenna or direct cable connection, adjust the antenna direction or try changing the channel.


Step 1: Check the Antenna cable connection

Sony tv signal issue

{Skip this if you are not using an Anteena}

A loose antenna cable connection may cause this no-signal issue in most cases. Sometimes your antenna or cable is just not connected properly.

So, before you do anything else:

  • Make sure the antenna is securely connected. The antenna jack may be on your television’s side or back panel.
  • If there’s no visible port labeled antenna, check your owner’s manual or look around your television for a cable or cord that leads out of it.
  • Remove and replace any cables that have been dislodged during recent use or storms.

Additionally, make sure the antenna cable is plugged in firmly and at both ends of the connection.

Related: Sony TV just turns on and then off itself (5 ways to fix)

Step 2: Check and Unplug all the cables

Signal not working on sony TV

This is called power reset/cycle.

Often, simply unplugging and replugging all the cables fix whatever issue you have. It may seem sound silly, but it works most of the time.

Here’s the process:

  • Power off all the HDMI-connected devices to the TV.
  • Disconnect all the HDMI cables from the TV too.
  • Unplug the TV from the power outlet completely.
  • Now wait for 60 seconds.
  • During this time, press and hold the TV’s power button for about 20 seconds.
  • Once you are done, plug all the cables back in and power the TV on.

Now check whether the issue has been solved.

If the problem persists and your Sony TV still displays the same f**king message ‘No signal check the external input‘, move on to the next step.

Step 3: Ensure that the source device is working properly

Check the source

That’s the main culprit, you know!

Chances are that, problem is with the source device, not with the TV or settings.

If that’s the case, the solution is pretty simple!

First, make sure the source device is working correctly. This is very important. For this, connect it with another television or different input to test.

If you can usually play content, you know it’s not an issue with your TV, and you need to troubleshoot your source device.

Step 4: Try using the Auto program feature

Sony tv having signal issue

This is a highly effective method for fixing this issue.

In 90% of cases, running the auto-program will resolve the problem.

This is specifically designed to automatically adjust every signal setting and connection within the TV

Here’s how:

  • Press the “Home” button on your remote control.
  • Select “Settings.”
  • Now choose Channels > Channel setup.
  • After that, you’ll see two options: “Cable” and “Antenna.” Select the appropriate signal type for your connection.
  • Finally, select “Auto Program.”

You should see a message that says, “Scanning for channels… Please wait until complete”.

Once the scanning is done, use your arrow buttons to select Exit Auto Program Mode. Press OK again and then press your power button to turn off your TV.

In terms of auto-programming methods, each television is unique. The processes and terminology for your model may differ from those in the above guide. You will find everything about the auto-program feature in the manuals.

Step 5: Update the TV’s Firmware

Why does my sony TV has no signal

If none of the above methods work, check if the TV has installed the latest firmware. If not, update your Sony Smart TV.

Sony says,

“You may also encounter this message after completing a bad software update for your TV.”

There is a huge possibility that the recent update destroyed your TV’s functionality. If that’s the case, re-updating the system might help.

To check and update your TV:

  • First, go to “Settings. “
  • Then click on “Customer Support/Setup/Product Support.”
  • Now select “Software Update.”
  • Finally, press “Network.”

If a software update is available, install it. Once installed, turn on your TV and check for signals again.

Don’t power off your TV or unplug it from the power outlet during the update process. Interrupting the update process may cause your TV to become unresponsive or require repair.

Sony TV Antenna Input not working

Sony TV Antenna Input not working

If your Sony TV says “No signal, please check your antenna connection” or the antenna input is not working on your Sony TV, issue lies with the antenna or the input port.

I mean, either the port or the antenna is malfunctioning.

But before you go replace them, check the following:

1. Check the cable connection

Ensure that the antenna cable is securely connected to the antenna input on your TV.

Sometimes a loose or faulty connection can cause issues. Try disconnecting and reconnecting the cable to make sure it is properly seated.

2. Antenna positioning

Make sure your antenna is positioned correctly and is pointing in the right direction to receive a strong signal.

You may need to adjust the position or move it to a different location in your home.

3. Rescan for channels

Use your TV’s menu or settings options to perform a channel scan or auto-tune.

This process will allow your TV to search for available channels and save them in its memory. Sometimes, a simple channel scan can resolve reception problems.

3. Check for signal interference

If you have other electronic devices near your TV, they could be causing interference with the antenna signal.

Try moving any such devices away from the TV or turning them off temporarily to see if it improves the reception.

4. Test with another TV or antenna

If possible, try connecting the antenna to a different TV or test a different antenna with your Sony TV.

This can help determine if the issue lies with the antenna itself or the TV’s antenna input.

Now if you think the problem is actually with the input port or the antenna itself, replace them as necessary.


Q. My TV says no signal, but everything is plugged in

If you’re seeing a “no signal” error on your Sony TV, but everything is plugged in, your TV is not receiving any input from your HDMI sources.

Check that your HDMI cables are securely plugged into your TV and HDMI source devices.

If you’re using an HDMI splitter, make sure it’s plugged in and powered on. It’s also possible that there may be an issue with your HDMI source devices or your TV’s HDMI ports.

Try unplugging and replugging all of your HDMI cables and devices. If that doesn’t work, try resetting your TV by unplugging it from the power outlet for 30 seconds.

Q. My Sony TV says “No input detected”

If your Sony TV is displaying “No input detected” message and advises you to check the external input, it means that it’s not receiving input from your HDMI source. There are a few things you can do to fix this issue:

  • Check that all of your HDMI cables are properly plugged in.
  • If you’re using an HDMI splitter, make sure that it’s properly connected.
  • Check your HDMI source (e.g. Blu-ray player, cable box, etc.) to see if it’s turned on and set to the correct input.
  • Try a different HDMI cable.

If you’re still experiencing the issue, factory reset your Sony TV.