What Is Input Signal Plus Samsung TV? (Use And Fix Guide)

Are you having trouble getting the most out of your Samsung TV Input Signal Plus feature?

It’s OK, you’re not alone. Many users are unaware of it, and when they attempt to use it, they have issues, so if you are also curious, what is Input Signal Plus, how can I use it, and how can I troubleshoot it?

I’ll help you out, in this guide I have covered it all and by the end of it, you will be able to know more about the Input Signal Plus feature of your Samsung TV, how to use it, what it does, and what needs to be done to get rid of any issues you face while using it.

So without further ado, let’s proceed.

What Is Input Signal Plus on My Samsung TV and What Does It Do?

Input Signal Plus on Samsung TVs is a feature that expands the input signal range for HDMI connections, it allows devices to use higher resolutions than what would normally be possible without it.

When it is set to On, resolutions up to 3840 x 2160 @ 60 Hz are supported with Input Signal Plus set to Off, resolutions up to 3840 x 2160 @ 30 Hz are supported.

For UHD input signals, the following resolutions are supported: 3840 x 2160p and 4096 x 2160p.

This feature helps ensure compatibility with a variety of devices such as gaming consoles and streaming media players. It also ensures that you can enjoy the content of its highest quality on your Samsung TV.

However, if you are connecting the TV to a device that only supports UHD 24 Hz or 30 Hz frequencies, Input Signal Plus won't be available since they do not meet the requirements for this function.

If this is the case with your setup then it’s best to turn off Input Signal Plus so as not to experience any issues while viewing content, don’t worry, I have covered that as well below and first let’s see how to turn it on and use it and later we will move to troubleshoot part.

How To Use And Turn On Input Signal Plus On Samsung TVs?

Enabling "Input Signal Plus" On HDMI Ports
Enabling “Input Signal Plus” On HDMI Ports

Here’s how to enable the Input Signal Plus on your Samsung TV:

  1. Press the “Home” button on your Samsung TV remote to access the main menu.
  2. Navigate to “Settings” and select “General” from the options.
  3. In the General settings, select “External Device Manager
  4. In the External Device Manager settings, select “Input Signal Plus
  5. Turn ON” the Input Signal Plus for the HDMI ARC port that the external device is connected to.
  6. That’s all, now your screen resolution will be enhanced with HDR and you will be able to get an improved signal.

With Input Signal Plus enabled, you can connect compatible devices with fast data transfer and crisp images at up to 4K resolution.

This ensures that your viewing experience is as immersive and enjoyable as possible, delivering top-notch picture quality no matter which content you are watching.

It also helps minimize lag and enhance audio clarity when connecting multiple devices simultaneously.

Now, let’s see how to troubleshoot issues that often arise and are reported by many Samsung TV users some reported the function is not available and is grayed out, and others reported lags, and glitches while using it with their Gaming Consoles like Xbox and PS5, moreover few users reported flickering issue when they turn on and use the Input Signal Plus feature.

Troubleshooting Samsung TV Input Signal Plus Issues

So, I was trying to get the 4k 120hz HDR goodness on my Samsung TV when I connected my PC to it, but I found out that the only way to do that was by enabling Input Signal Plus. But, here’s the thing, as soon as I turned it on, the screen went blank and I got no signal. It was super frustrating.

But, when I turned Input Signal Plus off, the screen came back on. It turns out that I had an old and incompatible HDMI cable.

Basically, my HDMI cable was not up to the task and couldn’t handle all that 4k 120hz HDR goodness.

To get it sorted, I needed to get a new HDMI 2.1+ cable with high speed. Now everything is working great!

Similarly, other users reported this kind of issue where on their Input Signal Plus they were getting “no signal”, in order to get that sorted, you need to replace the HDMI cable and after that, once you get HDMI 2.1+ high-speed cable and connect the devices using it, the issue will be sorted.

Input Signal Plus Function Not Available

If you are wondering why the Input Signal Plus function is not available and how to sort a ‘greyed out’ HDMI port under the Input Signal Plus, don’t worry, let’s get that sorted.

It occurs due to:

  • Incompatible HDMI Cable connected
  • Connected Device doesn’t support the resolution provided by Input Signal Plus
  • Temporary Glitch

Moreover, some users have reported that their Input Signal Plus isn’t working properly, resulting in no sound coming from their television.

If you’re experiencing this issue with your Samsung TV, there are several steps you can take to resolve it.

  • Check and replug all connections between TV and connected devices.
  • Turn off and turn on the input signal plus.
  • Hard reboot the connected device and TV by removing the cable from the power socket and plugging back after 2 minutes.
  • Lastly, check for any firmware updates and if there are any available, update the TV.

Although Input Signal Plus enhances the connection and also provided HDR capabilities but often users due to the ongoing issues wanted to turn it off, and if you also wish to get rid of lags, flickering, or any other issue you are facing with Input Signal Plus feature on your Samsung TV, you can disable it easily.

How to Disable Input Signal Plus

Apart from no signal, black screen, and screen tearing, the Input Signal Flickering and the lagging issue is a common problems that many Samsung TV owners experience.

It can be incredibly frustrating when your TV repeatedly turns on and off (Flicker) or displays a spinning circle instead of the desired content. I would recommend going through the above troubleshooting steps through which the issue can be sorted easily.

But, If these efforts do not resolve the issue, it may be necessary to disable Input Signal Plus from within the settings menu of your Samsung TV.

  • Navigate to Settings > System > Input Signal Plus and toggle it “off”.
  • Restarting the device afterward is necessary for changes to take effect properly.


Input Signal Plus is a feature available on select Samsung TVs that reduces screen flickering and image tearing when using HDMI connections. When enabled, it automatically sets the input signal frequency to UHD 60 Hz or FHD 120 Hz.

In conclusion, Input Signal Plus is a feature on Samsung TVs that allows for high-quality audio/video from external devices when connected via HDMI. However, some users may experience issues such as blank screens, no audio, and compatibility issues with certain HDMI cables.

I have provided the troubleshooting steps above, I hope you will be able to get rid of any issue you are facing with Input Signal Plus on your Samsung TV, just make sure you follow them exactly as mentioned and consider each step carefully.