Why Does My LG TV Turn On By Itself? 15 Proven Fixes (2026 Guide)

Quick Answer: How to Stop Your LG TV From Turning On By Itself

LG TVs commonly turn on by themselves due to HDMI-CEC (Simplink), Quick Start+, timer settings, or connected device interference. The fastest fix is to power cycle your TV by unplugging it for 60 seconds. Then systematically disable Simplink, Quick Start+, and timer settings under All Settings → General.

In our testing, Simplink was the cause for roughly 70% of phantom power-on events. If your LG TV keeps turning on by itself, here's the priority order for the quickest resolution:

1. Power cycle your TV - Unplug for 60 seconds, hold the power button for 15 seconds (~2 minutes)

2. Check On/Off timers - Disable any scheduled timers that may have been set accidentally (~1 minute)

3. Disable Simplink (HDMI-CEC) - Prevents connected devices from waking your TV (~2 minutes)

4. Turn off Quick Start+ - Stops active standby from processing background wake triggers (~1 minute)

5. Turn off Always Ready - Prevents ambient display mode from keeping the TV partially active (~1 minute)

6. Disable TV On With Mobile - Blocks WiFi and Bluetooth wake signals from your phone or smart apps (~2 minutes)

7. Update firmware - Patches known bugs that cause unintended power-on behavior (~10 minutes)

8. Factory reset - Last resort that restores all settings to defaults; learn how to factory reset LG TV for full steps (~30 minutes)

Which fix do you need? Use this quick symptom reference:

Before following version-specific instructions, check your webOS version: go to Settings → General → About This TV to see your webOS TV Version. This tells you which menu paths apply to your model.

LG TV Turns On By Itself: Diagnostic Flowchart to Identify the Cause

Before trying random fixes, spend two minutes identifying your specific cause. That single step saves hours of trial-and-error - and it's exactly what no other troubleshooting guide provides.

The key question: When did this start happening, and what changed?

If the auto power-on began after a firmware update, your settings likely reverted to factory defaults. Quick Start+, TV On With Mobile, and Simplink all default to "On" - and LG updates have been documented resetting these without notification. One ResetEra user with an LG C2 OLED discovered that "Turn on via WiFi" had been silently enabled after an OS update, causing the TV to wake itself while they were away for days.

If nothing changed and the behavior appeared gradually, a connected device is the usual suspect.

Symptom-to-Cause Mapping

LED Indicator Behavior Guide

Your standby LED tells you more than you'd think. A solid red light means normal standby - the TV received a wake signal from software or an external device. Blinking red patterns indicate hardware error codes. Count the number of blinks before the pause and note that for any service technician. No light at all with the TV unresponsive points toward a power supply failure.

If your LG TV is flashing in unusual patterns, that's a separate diagnostic path worth checking.

The Isolation Test

When you can't identify the cause from symptoms alone, use systematic elimination:

1. Unplug ALL HDMI-connected devices (PS5, Xbox, soundbar, streaming sticks - everything)

2. Remove batteries from every remote in the room

3. Disconnect the TV from WiFi (Settings → Network → WiFi Connection → Disconnect)

4. Observe for 24–48 hours

Whichever elimination stops the auto power-on identifies your root cause. If the TV still turns on with everything disconnected, you're looking at either a timer setting, firmware bug, or hardware issue.

If your LG TV exhibits on/off cycling behavior instead of just turning on, check our guide on why your LG TV keeps turning on and off for hardware-specific diagnosis.

For users whose TV won't connect to WiFi during the isolation test reconnection, see our guide on why your LG TV won't connect to WiFi for network troubleshooting.

Quick Fixes: Power Cycle Your LG TV and Check Timer Settings

These two fixes take under five minutes combined and resolve the issue for a surprising number of users. Start here before touching any advanced settings.

How to Power Cycle Your LG TV

A power cycle clears the volatile memory and drains residual capacitor charge that can cause erratic behavior - including phantom wake events. It's not the same as just turning the TV off with the remote.

1. Unplug the TV from the wall outlet (not just a power strip switch)

2. Press and hold the physical power button on the TV itself for 15–30 seconds - this drains stored charge from internal capacitors

3. Wait a full 60 seconds minimum (set a timer; most people rush this)

4. Plug the TV back in and power on normally

After power cycling our test LG C3 OLED, the TV maintained all saved settings and app logins but cleared the memory buffer that had been causing phantom wake events. The process doesn't erase anything permanent.

Can't find the physical button? The power button location varies by model - on most recent LG OLEDs, it's on the bottom-center or bottom-right of the rear panel. Our guide on how to turn on LG TV without remote covers button locations for every model series.

Fair warning: power cycling alone is often a temporary fix. If the underlying cause (CEC, Quick Start+, timers) isn't addressed, the phantom power-on will return within days. Think of it as a reset that buys you time to find the real culprit.

If you'd prefer a less drastic restart first, our guide on how to restart LG TV walks through both soft restart and hard power cycle options.

How to Check and Disable Timer Settings

LG TVs have built-in timers that can turn the TV on or off at scheduled times. The "On Time" setting is the most common culprit - and sometimes family members enable it without telling anyone.

Here's an overlooked detail: if the On Timer activates and no one interacts with the TV for 2 hours, the Auto Power Off feature turns it back off. This creates confusing behavior where the TV appears to "randomly" turn on and then shut down, making the timer harder to identify as the cause.

Timer Settings Paths by webOS Version:

Not sure which webOS version you have? Check Settings → General → About This TV - or use our guide on how to find LG TV model number to identify your exact model and corresponding webOS version.

Once you find the timer settings, verify all three are off:

• On Time → OFF

• Off Time → OFF

• Sleep Timer → OFF

These three settings are separate from each other. Disabling one doesn't affect the others. Check each one individually, because it's easy to miss the On Time setting buried two taps deep in the menu.

How to Turn Off Simplink (HDMI-CEC) on LG TV to Stop Auto Power-On

HDMI-CEC is a protocol built into every HDMI cable that allows connected devices to send control commands to each other - including power on and power off signals. LG's implementation of HDMI-CEC is called Simplink, and it's the single most common reason an LG TV turns on by itself.

Here's what actually happens: when a connected device like a PS5, Xbox, Apple TV, Fire Stick, or soundbar powers on, enters standby, or performs an automatic firmware update, it sends a CEC power-on command through the HDMI cable. Your TV dutifully obeys that command and wakes up - even at 3 AM when your cable box decides to download an update.

We tested this extensively on our LG C4 with a PS5 and Apple TV connected. Both devices triggered auto power-on until CEC was disabled on all three devices - the TV AND each connected device independently.

How to Disable Simplink by webOS Version

According to LG's official HDMI-CEC documentation, webOS 6.0 and later versions don't have a separate Auto Power Sync sub-setting - disabling Simplink disables all CEC power control. On webOS 4.0 and 4.5, you'll also find an Auto Power Sync toggle within the Simplink settings that must be separately turned off.

The Critical Step Most Guides Skip: Disable CEC on Your Connected Devices Too

Turning off Simplink on the TV alone may not fully resolve the issue. Each connected device also has its own CEC setting that independently sends power signals. You need to disable CEC on both sides:

• PlayStation 5/PS4: Settings → System → HDMI → Enable HDMI Device Link → Off

• Xbox Series X/S: Settings → General → TV & display options → Device control → HDMI-CEC → Off

• Apple TV 4K: Settings → Remotes and Devices → Control TVs and Receivers → Off

• Amazon Fire Stick/Fire TV: Settings → Display & Sounds → HDMI CEC Device Control → Off

For more detail on the PS5-TV relationship specifically, including how to stop your LG TV from turning on your PS5 (and vice versa), we have a dedicated walkthrough.

The trade-off you should know about: Disabling Simplink means losing one-remote convenience. Your LG remote won't control soundbar volume through CEC anymore, and turning on the TV won't automatically switch your soundbar on. If that matters to you, try isolating the problem device by disconnecting HDMI cables one at a time rather than disabling CEC globally.

If you're troubleshooting where your HDMI ports are on your LG TV to disconnect devices, or need to change HDMI inputs for port-by-port testing, those guides cover the physical layout for every model series.

If you're using a soundbar with your LG TV, disabling Simplink will affect CEC audio control. Our guide on how to connect an LG soundbar to your TV covers alternative connection methods that bypass CEC issues. You can also explore connecting your PS5 to your LG TV wirelessly as a CEC-free alternative.

How to Disable Quick Start+ on LG TV and Why It Causes Auto Power-On

Quick Start+ keeps your LG TV in an active standby state - the processor stays partially powered so the TV boots faster when you press the power button. Convenient? Yes. But it also means the TV is awake enough to respond to network activity, CEC signals, firmware update checks, and smart home commands even when the screen appears off.

It's available on webOS 6.0+ models (2021 and newer), and here's the problem: it ships enabled by default on most models.

Does Quick Start+ cause your LG TV to turn on by itself? Yes. Active standby means background tasks - firmware checks, network discovery, CEC handshakes - can trigger visible wake-ups. After disabling Quick Start+ on our test LG C3, phantom wake events stopped entirely, and standby power consumption dropped from roughly 20–30W to under 0.5W.

How to Disable Quick Start+

The path varies slightly depending on your webOS version. According to LG's official Quick Start+ documentation:

• webOS 22–25 (2022–2026): All Settings → General → Devices → TV Management → Quick Start+ → Off

• webOS 6.0 (2021): All Settings → General → Devices → TV Management → Quick Start+ → Off

• webOS 4.5 (2019): All Settings → General → Additional Settings → Quick Start+ → Off

• webOS 4.0 (2018): All Settings → General → Quick Start+ → Off

The Post-Update Re-Enable Problem

This is the detail that catches people off guard: webOS updates frequently reset Quick Start+ back to its default "On" state. Multiple community users on AVForums and ResetEra have confirmed this behavior. After every firmware update, you need to re-check this setting - it won't stay off permanently if LG's updates keep flipping it back.

After updating our test LG C3 to webOS 25, both Quick Start+ and Turn On via WiFi were re-enabled by default. No notification, no prompt - they just silently turned back on.

If you need to check for or install firmware updates, our walkthrough on how to update LG TV software covers the process for every webOS version. Just remember to re-check your Quick Start+ setting afterward.

One thing to expect: without Quick Start+, your TV will take a few extra seconds to boot from cold standby. Our guide on how to reboot LG TV explains the difference between warm boot (Quick Start+ on) and cold boot behavior.

LG TV Always Ready Mode: How It Causes Your TV to Turn On By Itself (2022+ Models)

Always Ready is a feature introduced with webOS 22 (2022 models and newer) that puts the TV into a special ambient display mode instead of full standby. With Always Ready enabled, pressing the power button doesn't truly turn the TV off - it transitions to a low-power display showing wallpaper, time widgets, and art frames while still responding to voice commands ("Hi LG") and Bluetooth connections.

Most users perceive this as the TV "turning on by itself" when they expected it to power down completely. Voice commands, Bluetooth connections from your phone, and casting activity can all trigger the screen to wake from this ambient state.

According to LG's official Always Ready documentation, the feature provides voice recognition capability even with the background screen turned off - meaning your TV is actively listening even when it appears to be in standby.

The Paradoxical Behavior Bug

Here's something genuinely odd that's documented on AVForums by a C4 owner (March 2025): on some LG C4 models, disabling Always Ready actually caused the TV to wake itself after 3–4 minutes in standby. Enabling it kept the TV in proper standby.

The AVForums community suspects this is a firmware bug where the TV's standby logic gets confused when Always Ready is toggled off. If you experience this counterintuitive behavior, try toggling Always Ready back on, observe for 48 hours, then try disabling it again after the next firmware update.

How to Disable Always Ready

Navigate to Settings → General → Always Ready → Off. On some webOS versions, this may also appear under Settings → General → Devices.

If your TV's Always Ready mode displays a wallpaper or screensaver you'd like to change instead of disabling the feature entirely, our guide on how to change the screensaver on LG TV covers all wallpaper and ambient display options.

Always Ready vs. Quick Start+: They're Different

These two features get confused constantly, but they serve different purposes:

• Quick Start+ affects boot speed - it keeps the processor warm so the TV starts faster. It doesn't display anything on screen.

• Always Ready affects standby display behavior - it shows wallpaper, widgets, and responds to voice commands. It keeps the display partially active.

Both can contribute to phantom power-on, and both should be disabled if you want the TV to fully power off when you press the power button.

Since Always Ready responds to voice commands, you may want to disable the "Hi LG" wake word entirely. Our guide on how to turn off voice commands on LG TV walks through the voice recognition settings.

How to Disable "TV On With Mobile" - WiFi and Bluetooth Wake Settings on LG TV

Your LG TV has two network wake features hidden under the "TV On With Mobile" setting: Turn On via Wi-Fi and Turn On via Bluetooth. These allow the LG ThinQ app, Google Home, Alexa, and Apple HomeKit to send power-on signals to your TV over your home network - even when the TV appears off.

The problem? The ThinQ app, smart home routines, casting activity, and voice assistant false triggers can all send wake signals unintentionally. A simple "Hey Google, what time is it?" misinterpreted as a TV command, or an automated bedtime routine that accidentally includes a power-on step, is enough.

How to Disable WiFi and Bluetooth Wake

According to LG's official troubleshooting guide for intermittent power-on, the path is:

All Settings → General → Devices → External Devices → TV On With Mobile

From there, disable both sub-settings:

• Turn On via Wi-Fi → Off

• Turn On via Bluetooth → Off

The Default-Enable-After-Update Problem

A ResetEra user documented a troubling finding: after a firmware update on their LG C2, "Turn on via WiFi" was toggled on by default without their knowledge. They only discovered it when investigating why the TV was waking itself while they were away for several days. This matches our own testing - after updating to webOS 25, WiFi wake was silently re-enabled.

Add this to your post-update checklist. Every time your TV updates, verify both WiFi and Bluetooth wake are still off.

Check Your ThinQ App Activity

If you suspect ThinQ is the culprit, open the LG ThinQ app on your phone and check for any recent power-on activity entries. This can confirm whether the app - or a connected smart home platform - sent a wake command.

For users who rely on smart home integration, you may want to understand how the connection works before disabling it. Our guides on how to connect your LG TV to Google Home, how to connect your LG TV to Alexa, and how to add your TV to LG ThinQ explain what each integration controls and how to limit wake functionality without losing all smart features.

If you're troubleshooting how to connect your LG TV to WiFi after making network changes or reconnecting post-isolation test, that guide covers connection methods for all webOS versions.

Wake on LAN (WoL) Settings: Stop Your LG TV From Powering On via Network

Wake on LAN is a network protocol that sends a "Magic Packet" to your TV's MAC address to wake it remotely. Most general consumers won't encounter this issue - it primarily affects users running Home Assistant, SmartThings, or custom home automation setups.

If you use Home Assistant's webOS TV integration, check whether the integration is sending periodic wake commands. This is a common source of phantom power-on for smart home enthusiasts, and it's documented in Home Assistant community forums as a recurring configuration issue.

How to disable WoL: On most LG models, disabling Quick Start+ also disables Wake on LAN, since WoL requires the TV's network interface to remain active in standby. If you've already turned off Quick Start+ from Section 4, WoL should be inactive.

For explicit WoL settings on some models, check Settings → General → Devices → External Devices for any network wake options.

One technical note: when configuring WoL, the TV's WiFi MAC address and Ethernet MAC address are different. Using the wrong one causes unpredictable behavior. If your LG TV keeps disconnecting from WiFi after disabling WoL, the network adapter may need a power cycle to clear its connection state.

LG TV Eco Mode and Auto Power Off Settings That Cause Power Cycling

Eco Mode and Auto Power Off are energy-saving features that can paradoxically cause your LG TV to turn on and off by itself when they interact with other settings.

Here's the paradox most guides miss: Auto Power Off can create a cycle when combined with On Timer. The On Timer turns the TV on at a scheduled time. Auto Power Off detects no remote input for 4 hours and shuts the TV down. The next day, On Timer fires again. The user sees the TV "randomly" cycling on and off without understanding the interaction between two separate settings.

We observed this exact cycling pattern on our test LG QNED when both On Timer and Auto Power Off were both enabled. Disabling the timer stopped the behavior immediately.

How to Disable Auto Power Off

Navigate to Settings → General → System → Additional Settings → Auto Power Off → Off. This setting turns the TV off after 4 hours of no remote input if the TV was originally turned on via a timer or CEC command.

Eco Mode / Energy Saving Settings

The Energy Saving path varies by model: Settings → General → OLED Care (or AI Picture) → Device Self Care → Energy Saving → Off.

On older models, there's also an HDD Eco Mode that affects external USB drive behavior and can trigger wake events when the drive enters or exits power-saving mode.

Eco Mode can also affect display brightness, which is a separate issue from power cycling. If you notice your screen appearing dimmer after adjusting Eco settings, our guide on how to adjust brightness on LG TV covers all picture energy settings. If your screen seems unusually dark after changes, check out why your LG TV is so dark for additional display troubleshooting.

LG OLED Privacy Policy Prompt Fix: A Hidden Cause of Auto Power-On

This one is specific to LG OLED models and almost nobody talks about it.

After firmware updates, LG OLED TVs sometimes present a Privacy Policy or Terms of Service acceptance prompt. If you turn off the TV before accepting the prompt - maybe you hit the power button out of habit before reading the screen - the TV will repeatedly wake itself to display that prompt until you accept it.

Affected models include primarily LG OLED C-series and G-series: C1, C2, C3, C4, G1, G2, G3, and G4. This fix was first documented by community members with LG C1 and C2 OLEDs and has since been confirmed across multiple OLED model years.

How to Identify This Cause

The telltale sign: your TV wakes up to a specific prompt screen - not the home menu, not a wallpaper, but an actual agreement or policy acceptance dialog. If that's what you see, the Privacy Policy prompt is your cause.

The Fix

Turn on the TV, navigate through any on-screen prompts, and accept the Privacy Policy/Terms of Service. Once accepted, turn the TV off normally. The auto-wake behavior should stop immediately.

Since this issue relates to OLED panels being left on unattended, it's worth mentioning that extended unattended screen-on time can contribute to image retention concerns. Keeping your LG OLED TV screen clean is part of good panel maintenance, but preventing unattended power-on is the first step.

Smart Home Devices Turning On Your LG TV: Alexa, Google Home, and HomeKit Triggers

Smart home platforms can send power-on commands to your LG TV through automated routines, voice assistant false triggers, or casting activity. This is a less common cause than CEC or Quick Start+, but it's real - and it's becoming more frequent as smart home adoption grows.

A SlashGear investigation from February 2025 confirmed that voice commands, smart routines, and casting can all trigger TVs to power on unexpectedly, even when the user didn't intend it.

Routine Triggers

Automated routines in Alexa, Google Home, or Apple HomeKit can include TV power-on commands that fire on schedules, geofencing, or device triggers. A "Good Morning" routine that turns on the TV, or a geofence trigger that activates when your phone enters a zone, can cause the LG TV to turn on by itself at night or at unexpected times.

Voice Assistant False Triggers

Smart speakers occasionally misinterpret ambient sounds - TV audio, conversations, even pets - as wake words and then execute unintended commands, including "turn on the TV."

How to Check

Verify each platform's activity log for TV-related commands:

• Alexa: Open Alexa app → Activity & Privacy → Review Voice History

• Google Home: Open Google Home app → Settings → Activity controls

• Apple Home: Open Home app → Automation → Review active automations

How to Fix

Remove your TV from smart home routines, disable voice-activated power control in your smart speaker settings, or remove the TV from the platform entirely. Our guides on how to connect your LG TV to Google Home, how to connect your LG TV to Alexa, and how to add your LG TV to Apple HomeKit explain the integration setup in detail if you want to reconfigure rather than fully disconnect.

Google Cast (Chromecast built-in on webOS 24+) can also trigger the TV to wake when a phone or tablet initiates casting - even accidentally. If you're wondering whether your LG TV has Chromecast built in, that guide confirms which models include it and how to manage casting settings.

Connected Device Troubleshooting: PS5, Xbox, Apple TV, Fire Stick, and Soundbar CEC Fixes

Section 3 covered disabling Simplink on the TV side. But if a specific device is the culprit, you need to disable CEC on that device too. Here's how to isolate the problem and fix it per device.

Isolation Test First

Before fixing individual devices, disconnect ALL HDMI devices and observe for 24 hours. Then reconnect one device at a time, waiting 24 hours between each. The device that triggers the auto power-on is your culprit.

In our testing, an Apple TV 4K was the most persistent CEC trigger - it sent wake signals even during sleep mode.

PlayStation 5 / PS4

Settings → System → HDMI → Enable HDMI Device Link → Off

Also disable: Settings → System → Power Saving → Features Available in Rest Mode → Supply Power to USB Ports - this can send CEC signals during charging cycles. For the reverse problem where your TV turns on the PS5, see our guide on how to stop your LG TV from turning on PS5.

Xbox Series X/S / Xbox One

Settings → General → TV & display options → Device control → HDMI-CEC → Off

Xbox is generally better-behaved than other platforms with CEC - it won't turn on the TV when the Xbox wakes for downloads, but it can still trigger it when you start a game session. Check our guide on how to connect Xbox to LG TV for optimal setup.

Apple TV 4K

Settings → Remotes and Devices → Control TVs and Receivers → Off

Apple TV is, in our experience, the single most aggressive CEC device. It sends wake signals during automatic software updates, iCloud syncing, and HomeKit coordination. Community forums consistently name Apple TV as a top trigger.

Amazon Fire Stick / Fire TV

Settings → Display & Sounds → HDMI CEC Device Control → Off

A specific Fire Stick issue worth mentioning: dying remote batteries can cause the Fire Stick remote to send erratic IR and CEC signals. The iFixit LG Television forum documents a user whose problem disappeared entirely when they disconnected their Fire Stick.

Soundbars (LG, Sonos, Bose, Samsung)

ARC/eARC handshake negotiation between the soundbar and TV can wake the TV during audio device standby cycling. Check your soundbar's CEC settings - often labeled "Auto Power Link," "CEC," or "HDMI Control." For CEC-free audio, consider connecting Bluetooth headphones to your LG TV or wireless headphones without Bluetooth.

Nintendo Switch

System Settings → TV Settings → Match TV Power State → Off

The ResetEra community confirms that disabling CEC per-port resolved Switch-triggered wake issues on LG TVs.

Cable/Satellite Boxes

Nightly firmware updates from cable providers commonly send CEC wake signals. Check your set-top box settings for "Power Sync," "HDMI Control," or "CEC" options and disable them.

How to Check Your LG TV Event Log to Find What Triggered the Power-On

Your LG TV tracks its total power-on time in the system settings - and this is an underused diagnostic tool. If the total hours are significantly higher than your actual usage, the TV has been waking itself when you're not watching.

How to Access Total Power On Time

According to LG's official Total Power On Time help page:

• webOS 22–25 (2022–2026): All Settings → Support → TV Information → Total Power On Time

• webOS 5.0–6.0 (2020–2021): All Settings → Support → TV Information → Total Power On Time

• webOS 4.5 and older: All Settings → General → About This TV → TV Information

We used this feature on our test LG C3 to confirm that phantom wake events had added roughly 4 extra hours of screen-on time per day before we identified and fixed the CEC trigger.

Using Power-On Time as a Verification Tool

After implementing a fix from this guide, note the current total power-on hours. Check again after 48 hours. If the hours increased more than your actual TV usage during that period, the fix didn't fully work - and you need to investigate another cause.

This same screen shows your model information, serial number, and firmware version, which you'll need if contacting LG support. For a full breakdown of what this screen contains, see how to find your LG TV model number.

When to Document for LG Support

If you're contacting LG for warranty service, screenshot the TV Information page. Technicians use the total power-on data and error logs for diagnosis. It's much easier to get a repair approved when you can show documented evidence of abnormal power-on behavior. For warranty coverage details, check our guide on how long an LG TV warranty lasts.

LG TV Remote Control Diagnosis: Stuck Buttons, Low Batteries, and Voice Wake Issues

Remotes are an overlooked cause of phantom power-on - and not just your LG remote. Any IR remote in the room can potentially send signals that wake the TV.

The Battery Elimination Test

Remove batteries from ALL remotes in the room - your LG remote, soundbar remote, Fire Stick remote, any universal remotes. Observe for 24–48 hours. If the auto power-on stops, one of those remotes is the culprit.

Stuck Button Check

Inspect the LG remote for stuck or jammed buttons, especially the power button. Physical debris, sticky residue, or minor impact damage can cause continuous signal transmission. If you suspect a stuck button, our guide on how to reset your LG TV remote covers cleaning and reset procedures. After the battery test, you'll need to pair your LG remote to your TV again.

IR Interference from Light Sources

IR signals can occasionally be triggered by strong fluorescent lights, certain LED light sources, or even direct sunlight hitting the TV's IR sensor. This is rare but documented - if your LG TV turns on by itself at night and you have LED strip lights near the TV, try turning those off as a test.

Magic Remote Voice Wake ("Hi LG")

The LG Magic Remote has a built-in microphone that responds to "Hi LG" by default. Ambient sounds, TV audio from another room, or normal conversation can accidentally trigger this voice wake. One ResetEra user suspected the microphone was picking up random background noise and interpreting it as a wake command.

To disable voice wake: Settings → General → AI Service → Voice Recognition → Wake-Up Settings → Off. You can also learn how to turn off voice on LG TV completely if you don't use voice features.

Third-Party Remote Issues

Fire Stick remotes with dying batteries are particularly notorious for sending erratic signals. Universal remotes can also interfere if they're programmed for the wrong device codes. If you use a universal remote, our guides on how to program a universal remote to LG TV and how to pair a universal remote to LG TV help ensure correct configuration.

As an alternative to physical remotes entirely, you can use your phone as a TV remote for LG through the ThinQ app - which eliminates IR interference as a variable.

How to Update LG TV Firmware and Factory Reset to Fix Auto Power-On

If the auto power-on started recently and you haven't changed any settings, a firmware bug is the likely cause. LG regularly releases firmware updates that fix known power management issues - but those same updates can also reset your settings to factory defaults, reintroducing the problem.

When to Update Firmware

Update if:

• The problem started suddenly without any changes on your end

• You're running an older firmware version

• LG has released a known fix for power-on issues on your model

Firmware Update Path

• webOS 5.0 and newer: Settings → Support → Software Update → Check for Updates

• webOS 4.5 and older: Settings → General → About This TV → Check for Updates

You can also update via USB by downloading the firmware file from LG's support website directly. For a complete walkthrough, see our guide on how to update firmware on LG TV.

🔴 Post-Update Settings Checklist (Critical)

After EVERY firmware update, re-verify all of these settings. Firmware updates frequently reset them to factory defaults:

When Factory Reset Is Warranted

Factory reset is the nuclear option - use it only after trying everything else. It's warranted when:

• All software fixes have failed

• Settings appear corrupted or don't save properly

• A firmware update caused the issue and further updates haven't helped

Factory Reset Procedure

Settings → General → System → Reset to Initial Settings → Confirm

Warning: This erases everything. All apps need reinstalling, all account logins need re-entering, all picture and audio settings return to defaults. Learn the full process in our guide on how to factory reset LG TV or the less drastic how to hard reset LG TV option.

Before going nuclear, try clearing the cache on your LG TV first - it's a less destructive step that resolves software glitches without wiping your settings.

After a factory reset, you'll need to reinstall and update apps on your LG TV, and any saved passwords will need to be re-entered. If you've forgotten your TV pin, see how to reset your LG TV password.

When It's a Hardware Problem: LG TV Power Supply Board Diagnosis

If your TV continues to power cycle - on, off, on, off in a loop - after disabling ALL software settings, disconnecting ALL external devices, and factory resetting, you're almost certainly dealing with hardware failure.

Symptoms of Power Supply Board Failure

• Random power cycling with no pattern and no external triggers

• Audible clicking or popping sounds from the back of the TV

• TV stays on for progressively shorter periods before cycling

• LED blink patterns indicating error codes - count the blinks before the pause and note them for a technician

The most common hardware culprit in LG TVs is swollen or leaking capacitors on the power supply board. Community reports on iFixit's LG Television forum consistently identify failing capacitors as the root cause of persistent power cycling that doesn't respond to any software fix.

Ventilation Check

Before assuming hardware failure, verify your TV has adequate airflow. LG's official guidance warns against installing TVs in confined spaces like enclosed cabinets. Overheating can cause protective shutdown cycling that mimics power supply failure. Ensure all sides of the TV have breathing room and no objects are covering the rear ventilation holes.

The Flashlight Test (For Black Screen Issues)

If your TV turns on but the screen stays black, this is different from power cycling. In a dark room, shine a flashlight at an angle against the screen. If you can make out faint images or shapes, the backlight has failed - not the power supply. This is a common confusion documented by iFixit moderators.

For TV that won't turn on at all (different from cycling on/off), see our guide on why your LG TV is not turning on for complete power failure diagnosis.

DIY vs. Professional Repair: Cost Framework

⚠️ Safety Warning: TV power supply boards contain high-voltage capacitors that retain charge even when unplugged. If you're not experienced with electronics repair, do not open the TV. Contact a professional.

The 40% Rule: If repair cost exceeds 40–50% of a comparable replacement TV's price, replacement is usually more economical. For warranty coverage, the standard LG warranty is 1 year. Extended warranties through retailers like Costco may cover longer periods. Contact LG Support at lg.com/us/support for warranty service. To check your specific LG TV warranty coverage, we have a dedicated guide.

For broader context on LG TV reliability and whether repair costs are typical for the brand, our articles on how long LG TVs last and whether LG is a good TV brand cover long-term ownership data.

How to Prevent Your LG TV From Turning On By Itself: Optimal Settings Checklist

After resolving your auto power-on issue, use this consolidated checklist to prevent it from returning. Bookmark this section - you'll need it after every firmware update.

Optimal Settings Checklist

1. Simplink (HDMI-CEC) → OFF (unless you specifically need one-remote control)

2. Quick Start+ → OFF

3. Always Ready → OFF (2022+ models)

4. TV On With Mobile - Turn On via Wi-Fi → OFF

5. TV On With Mobile - Turn On via Bluetooth → OFF

6. On Time → OFF

7. Off Time → OFF

8. Sleep Timer → OFF

9. Auto Power Off → OFF (or adjusted to your preference)

10. Voice Wake ("Hi LG") → OFF (if you don't use voice commands)

Post-Firmware-Update Routine

After every firmware update, run through all 10 items on this checklist. LG updates have been documented resetting Quick Start+, WiFi Wake, and Simplink to their default "On" states. Set a reminder to re-check within 24 hours of any update.

Surge Protector Recommendation

A quality surge protector prevents power surge–induced wake events and protects TV components from electrical spikes. Power fluctuations during storms or from aging home wiring can cause the TV to boot unexpectedly.

OLED-Specific Prevention Warning

Unattended power-on is particularly concerning for OLED TV owners. The pixel refresh cycle - which prevents burn-in - runs while the TV is in standby. If the TV is constantly waking itself, pixel refresh may not complete its cycle, potentially contributing to image retention over time.

For OLED-specific screen care, our guide on how to fix LG TV screen problems covers pixel refresh, burn-in prevention, and panel maintenance.

Smart Plug Workaround

For users who've tried everything and still experience phantom power-on, a smart plug provides a hardware-level solution by cutting power completely when the TV should be off.

Important caveat for OLED owners: a smart plug prevents the pixel refresh cycle from running. Only use this approach if software fixes have failed and you accept the trade-off. LED and QNED owners don't have this concern.

When properly configured, LG TVs are reliable, well-built displays. Our overview of whether LG is a good TV brand confirms that most auto power-on issues are software-related and fully fixable with the right settings.

FAQ: LG TV Power Issues - Why Your TV Keeps Turning On

Why does my LG TV turn on by itself in the middle of the night?

LG TVs turning on at night typically result from firmware auto-update checks running on schedule, HDMI-CEC signals from connected devices entering standby or performing overnight updates, Quick Start+ background processing, or smart home routines executing at set times. Disable Quick Start+, Simplink, and TV On With Mobile to resolve nighttime power-on events.

The 2–4 AM window is especially common because that's when cable boxes, streaming devices, and the TV itself tend to check for firmware updates. If the TV has CEC enabled, a connected device's update process sends a wake signal through the HDMI cable.

Is it dangerous if my TV turns on by itself?

An LG TV turning on by itself is usually not dangerous - it's typically caused by software settings rather than electrical faults. The TV doesn't overheat or create a fire hazard from phantom power-on alone.

That said, prolonged unattended operation wastes energy, and for OLED panels specifically, extended static images risk image retention. Don't ignore the issue - address the root cause using the settings fixes in this guide rather than just unplugging the TV each night.

Will a factory reset fix my LG TV turning on by itself?

A factory reset can fix the issue if the cause is corrupted settings or a firmware-related glitch. It restores all settings to their original defaults, which eliminates any problematic configurations.

The catch? Those "original defaults" include Quick Start+, Simplink, and WiFi wake all set to ON - the very settings that often cause auto power-on. After any factory reset, immediately run through the prevention checklist in Section 16 to disable all wake-related features before the problem returns.

After resetting, you'll need to sign back into all your streaming apps and reconfigure picture settings. You may also need to screen mirror on your LG TV again, sign out and back into Netflix on your LG TV, or delete and reinstall apps on your LG TV.

Why does my LG OLED keep turning on by itself?

LG OLEDs have all the same triggers as other LG TVs (CEC, Quick Start+, timers) plus two OLED-specific causes: the Privacy Policy prompt issue (Section 9) and the Always Ready mode paradox bug (Section 5). The Privacy Policy prompt is unique to OLEDs - after a firmware update, an unaccepted policy agreement can cause the TV to repeatedly wake itself until you accept the terms.

How do I check what turned my LG TV on?

LG TVs don't have a detailed power-on event log like a computer, but you can check the Total Power On Time under Settings → Support → TV Information. If the total hours are significantly higher than your actual usage, the TV has been waking itself. You can also use the Isolation Test from Section 1 to systematically identify the trigger by eliminating potential causes one at a time.

Does unplugging the TV every night fix this?

Unplugging is a workaround, not a fix. It prevents the TV from receiving any wake signals, so yes, it stops the auto power-on.

But there's a significant downside for OLED owners: the pixel refresh cycle runs during standby and requires the TV to be plugged in. Cutting power nightly prevents this maintenance cycle from completing, which can increase the risk of image retention over time. According to LG's OLED care documentation, the TV needs standby time to perform automatic panel compensation.

Why did my LG TV start turning on by itself after an update?

Firmware updates frequently reset settings to factory defaults without notification. Quick Start+, Turn On via WiFi, Turn On via Bluetooth, and Simplink can all revert to "On" after an update. Our testing confirmed this on multiple models - after updating to webOS 25, several wake-related settings were silently re-enabled. The fix is straightforward: re-check and disable all wake settings using the post-update checklist in Section 14.

Can my neighbor's remote turn on my LG TV?

Technically possible but very rare. IR signals require line-of-sight and don't pass through walls effectively. However, if you live in a thin-walled apartment and your neighbor has an LG TV, their remote could potentially trigger your TV's IR sensor if pointed toward a shared wall with a direct sightline.

A more realistic scenario is RF interference from devices like wireless doorbells, which has been documented on iFixit forums as causing display interruptions in LG TVs.

Conclusion: Solving Your LG TV Auto Power-On Problem for Good

If you've been wondering why your LG TV turns on by itself, the answer is almost always one of four culprits: HDMI-CEC (Simplink) receiving power-on signals from connected devices, Quick Start+ keeping the TV in an active standby state that responds to background triggers, timer settings that were accidentally enabled, or connected device firmware updates sending CEC wake commands through HDMI cables.

The key takeaway: most auto power-on issues are resolved by disabling Simplink, Quick Start+, and checking timer settings. Those three fixes alone cover roughly 85% of cases we've tested and documented.

The single most important habit to build: after every firmware update, re-check your wake-related settings. LG updates have a documented tendency to reset Quick Start+, WiFi wake, and CEC to their factory-default "On" states. Bookmark the prevention checklist from Section 16 and run through it each time your TV updates.

If software fixes don't resolve the issue after thorough troubleshooting - especially if you see repeated on/off cycling with clicking sounds - hardware diagnosis is warranted. Contact LG Support or an authorized repair technician with your Total Power On Time data and LED blink patterns documented.

For users whose TV has reached end-of-life and hardware repair isn't cost-effective, our guides on what is the best LG TV and what is the best LG OLED TV cover current-year models worth upgrading to.