Has your LG TV started unexpectedly switching to the HDMI input source? Random input changes can disrupt your viewing experience. Learn what causes this issue and how to fix it.
Your LG TV may switch to HDMI input due to enabled Quick Start mode, HDMI-CEC, faulty cables, app glitches, or hardware issues. Fortunately, solutions exist to prevent involuntary input source changes.
Why LG TV Switches to HDMI Input
Modern LG TVs allow connecting various devices through input ports like HDMI. Switching inputs lets you change the video source displayed.
However, sometimes LG TVs unexpectedly change to HDMI or revert to default input without user prompting. This involuntary input switching stems from different root causes. Other common issues include LG TV lagging, no sound through HDMI, or optical audio output not working.
Enabled Quick Start and HDMI-CEC
The Quick Start and HDMI-CEC features can automatically switch inputs when the TV powers on or off.
Quick Start remembers the last used input. HDMI-CEC enables connected devices to communicate, allowing one device to activate others.
If enabled, these convenient features may override manual input selections.
External Device Connections
Problems with cables, ports, or interference from other nearby devices can cause input switching:
- Faulty or loose HDMI cables disrupt signal transfer between devices and TV. Similar to Toshiba TV HDMI not working and Insignia TV HDMI not working.
- Dusty, damaged input ports misinterpret connections.
- Remote control signals or devices like soundbars may inadvertently activate TV commands.
App and Software Issues
Glitches in streaming apps or a pending OS update can also lead to unpredictable input change requests.
Hardware Failure
Issues with the internal mainboard or remote control could be signaling involuntary input adjustments.
How to Stop LG TV From Switching to HDMI
Use these troubleshooting tips to stop your LG TV from involuntarily reverting to HDMI input:
Disable Automatic Input Features
Turn off Quick Start, HDMI-CEC (SIMPLINK), and Auto Input Detection in your TV’s settings. This prevents automatic input changes.
Check External Connections
Examine all cables and ports for damage. Clean ports and swap cables if needed. Move devices farther apart to prevent interference.
Clear App Cache and Update
Delete cache from glitchy streaming apps. Install pending OS updates for possible fixes.
Reset TV to Factory Settings
If other fixes don’t resolve the issue, reset the TV. This erases all customizations but often remedies software-related problems.
Contact LG Support
For recurring hardware-related input switching, contact LG Support. Remote, motherboard, or port failures may require technician repair/replacement.
Key Takeaways
- Enabled Quick Start or HDMI-CEC can automatically switch LG TV’s input source.
- Faulty cables, dusty ports, remote control interference also lead to unpredictable input changes.
- Disable Quick Start/HDMI CEC, check connections, update apps and OS to stop involuntary input switching.
- Persistent issues could indicate hardware failure needing LG technician repair.
Restoring manual control over your LG TV’s input source selection is straightforward once the specific cause is identified. Pay attention to what precedes the switches to HDMI or default input to pinpoint the required fix. With the right troubleshooting steps, your viewing experience will no longer get interrupted.
Frequently Asked Questions
Why does my LG TV keep reverting to HDMI1 input?
The most likely culprits are enabled Quick Start or HDMI-CEC functions. Disable these features in your TV settings to maintain your manually selected input.
How do I stop my LG TV requesting HDMI2 input?
Frequent HDMI2 input prompts usually indicate a glitch in an app or OS. Try clearing the app cache and updating your TV software to address this behavior.
My LG TV HDMI ports don’t work well, could this cause input switching?
Yes, damaged HDMI ports unable to reliably sustain connections from external devices can definitely cause erratic input source changes. Try cleaning the ports thoroughly first, but you may need an LG technician to replace the ports if problems persist.
In Closing
Unprompted input source adjustments on your LG TV can happen due to incorrect settings, software bugs, or hardware issues. Carefully observing when the switches occur helps determine the proper fixes, whether app updates, feature disables, cable swaps, or component replacements. With consistent troubleshooting, you can stop your LG TV from involuntarily changing to the default HDMI input.
