LG TV Keeps Changing Inputs By Itself? 3 Quick Fixes!!

Is your LG TV continuously switching the input, every time you turn it on it goes to default HDMI, or do you keep receiving a popup that says HDMI2 as an input?

Well, if you are having this issue on your LG TV and would like to disable the auto input detection and eliminate the automatic input switching, then this guide will get you sorted.

My LG CX TV was working quite smoothly, but all of sudden it started switching inputs, showing a pop-up message about the HDMI2 input and whenever I turned on the TV I had to manually change the TV input, as it defaulted to the default input.

At first, I thought there must be some glitch or app that was causing this, but after I tried resetting, clearing the cache, it was still there, so I went into research mode and after checking multiple forums and social media sites, I found out that it is quite common.

Basically, it is a setting glitch and there are several ways to stop your LG TV from switching inputs by itself. I have listed multiple ways below through which you can fix the problem.

Why Does My LG TV Keep Switching Inputs by Itself?

LG TVs have multiple input modes, such as HDMI, AV, ARC, HDMI2, etc. So if you are using multiple inputs and have devices connected to them, you will have to do it manually.

LG TV switches inputs by itself because you have enabled the quick start mode in which, whenever you turn on the TV, it will automatically start, and the input source will reset to default, or because of a minor setting error.

On the other hand, the app or settings glitch causes it if the TV input pop-ups appear while you are already watching something on apps like Netflix, YouTube TV, Prime, YouTube, etc. You need to clear the app cache or reinstall the app you are receiving the TV input message on.

LG TV Change Settings

Nevertheless, I have provided several ways through which you can fix this and prevent your LG TV from switching inputs automatically.

How To Stop LG TV to Switch Inputs by itself?

Even if you have multiple inputs connected to your TV, such as HDMI, HDMI2, AV, ARC, or you have only one device connected to the input source, the basic methodology should detect what input you are using and should be stored until you manually change it.

When you are already watching something on TV and it shows you an input popup message or when you turn on the TV and it sets the input to default and you have to switch manually to your normal input mode. It becomes quite irritating and shouldn’t happen.

To fix this, you need to disable your LG TV’s auto input detection feature by turning off its quick start mode. Then it won’t switch input automatically when you turn the TV on.

Additionally, if you are getting this input popup while streaming any apps on your LG TV, you need to clear the app cache and stored data, as there is some corrupted data that is causing this.

No worries! It can easily be fixed, and here are the steps you can follow to accomplish this.

  • Power Cycle
  • Disable Auto Input Detection
  • Turn Off LG TV Quick Start Mode
  • Clear App Cache and Reset LG TV

Disable Auto Input Detection

In case you have the Auto Device Detection enabled on your LG TV, whenever you turn the TV on, it will automatically switch between inputs and choose the input source for you on its own.

Turning off the Auto Device Detection feature will stop the TV from automatically detecting the input source and fix the issue.

Steps To Turn Off Auto Device Detection on LG TV:

  1. Navigate to the Settings menu
  2. Go to Connections, then Device Connection, and then click OK
  3. Here you will see “Auto Detection”; turn it off

Afterward, your LG TV will no longer detect inputs on its own and you can restart your TV to verify.

Disable Auto Device Detection on LG TV
Disable Auto Device Detection on LG TV

In some cases, if that doesn’t work and you are still getting HDMI, HDMI2, ARC, or any other input popup automatically, then you need to turn off your TV’s ‘Quick Start’ mode.

Turn Off Quick Start Mode on LG TV

Some LG TV models may not allow you to disable the Auto Device Detection feature. In these cases, you can disable the “Quick Start Mode” to stop your TV from automatically changing inputs.

Quick Start mode is basically LG TV’s way of quickly letting you turn it on and see the screen. However, it bypasses your last input and lets you select the default input source.

To disable Quick Start on LG TV, follow these steps:

  1. On the remote control, press the Settings (cog) icon to open the right-hand side menu.
  2. Next, go to All Settings (the three dots icon that becomes a cog icon) and click.
  3. Scroll down until you see General (cog and spanner icon)
  4. When you reach Quick Start+, press right, and then down (on some LG TVs, you may have to select Additional Settings first)
  5. Turn Quick Start+ off (the circle on the right should slide left)
Turn Off Quick Start Mode on LG TV
Turn Off Quick Start Mode on LG TV

If you follow these steps you can turn off the quick start mode and then restart your TV and you will see some changes, including that it won’t detect inputs on its own because we told him not to use the smart features for this part.

Quick Tip: Alternatively, if your LG TV has CEC built-in, you can turn it off to stop it from changing inputs on its own. On LG TVs the CEC feature is named SIMPLINK (HDMI-CEC).

Clear App Cache or Reinstall the App

You may get input pop-ups like HDMI1 to HDMI2 etc. when using streaming apps like Netflix, Hulu, Prime Video, Netflix, Youtube, Disney+, etc. The issue lies with the app and its settings that are glitched.

If so, either clear the App cache by navigating to Settings > Applications > Selecting the app on which the issue occurs and deleting its stored data or reinstall the app.

See Also: How To Connect LG TV To Wifi Without Remote Control (Multiple Ways)?

Wrapping It Up

The Lg TV randomly changing inputs and repeatedly displaying input popups is quite annoying and it happens when either minor glitches are present or when the Auto input detection feature is on.

Here is a summary of the above guide as to what you need to do if you are also facing this problem

  • Power Cycle your TV (Remove the power cable and re-plug it after 4-5 minutes)
  • Disable the Auto Device Detection Feature
  • Turn Off Quick Start Mode
  • Delete the App and Reinstall