Your LG TV won’t turn on because the cache is overloaded which is preventing your device from booting up. You can fix your LG TV by power cycling it. First, unplug your TV’s power cord from your outlet and wait 45 to 60 seconds. Waiting the appropriate amount of time is important as it allows your TV to fully reset. Next, plug your power cable back into the outlet and try turning the TV on. If this doesn’t work, double-check that all your cables are securely plugged in and test your power outlet with another device
How to Fix an LG TV That Won’t Turn On
1. Power Cycle Your LG TV
When you turn your LG TV “off,” it isn’t truly off.
It enters a low-powered “standby” mode that allows it to start up quickly.
If something goes wrong, your TV can get stuck in standby mode.
Power cycling is a fairly common troubleshooting method that can be used on most devices.
It can help fix your LG TV because after continuously using your TV the internal memory (cache) may be overloaded.
Power cycling will clear this memory and allow your TV to run like it’s brand new.
To wake it up, you’ll have to perform a hard reboot of the TV.
Unplug it from the wall outlet and wait for 30 seconds.
This will give time to clear the cache and allow any residual power to drain from the TV.
Then plug it back in and try to turn it on again.
2. Replace the Batteries in Your Remote
If power cycling didn’t work, the next potential culprit is your remote.
Open the battery compartment and ensure that the batteries are fully seated.
Then try pressing the power button again.
If nothing happens, replace the batteries, and try the power button once more.
Hopefully, your TV will turn on.
3. Turn Your LG TV on Using the Power Button
LG remotes are pretty durable.
But even the most reliable remotes can break, after prolonged usage.
Walk up to your TV and press and hold the power button on the back or side.
It should power on in a couple of seconds.
If it doesn’t, you’ll need to dig a bit deeper.
4. Check Your LG TV’s Cables
The next thing you need to do is check your cables.
Inspect both your HDMI cable and your power cable, and make sure they’re in good condition.
You’ll need a new one if there are any horrendous kinks or missing insulation.
Unplug the cables and plug them back in so you know they’re properly inserted.
Try swapping in a spare cable if that doesn’t fix your problem.
The damage to your cable could be invisible.
In that case, you’d only find out about it by using a different one.
Many LG TV models come with a non-polarized power cord, which can malfunction in standard polarized outlets.
Look at your plug prongs and see if they’re the same size.
If they’re identical, you have a non-polarized cord.
You can order a polarized cord for around 10 dollars, and it should solve your problem.
5. Double Check Your Input Source
Another common mistake is using the wrong input source.
First, double-check where your device is plugged in.
Note which HDMI port it’s connected to (HDMI1, HDMI2, etc.).
Next press your remote’s Input button.
If the TV is on, it will switch input sources.
Set it to the correct source, and you’ll be all set.
6. Test Your Outlet
So far, you’ve tested many features of your TV.
But what if there’s nothing wrong with your television? Your power outlet may have failed.
Unplug your TV from the outlet, and plug in a device that you know is working.
A cell phone charger is good for this.
Connect your phone to the charger, and see if it draws any current.
If it doesn’t, your outlet isn’t delivering any power.
In most cases, outlets stop working because you’ve tripped a circuit breaker.
Check your breaker box, and see if any breakers have tripped.
If one has, reset it.
But keep in mind that circuit breakers trip for a reason.
You’ve probably overloaded the circuit, so you may need to move some devices around.
If the breaker is intact, there’s a more serious problem with your home’s wiring.
At this point, you should call an electrician and have them diagnose the problem.
In the meantime, you can use an extension cord to plug your TV into a working power outlet.
7. Check Your LG TV’s Power Indicator Light
LG TVs have a power light that will turn different colors to indicate unique problems.
If the light is on and the TV won’t turn on, there could be a problem with the circuit board.
Your power supply may be broken if the light remains off after you’ve plugged in the TV.
Here are some common light patterns on LG TVs.
Red Status Light is on
Unplug your power cord, and leave it unplugged for at least an hour.
Then press and hold the power button on the remote for 60 seconds.
Keep holding it as you plug the TV back in, and do so for an additional 60 seconds.
If that doesn’t work, you’re experiencing a hardware failure.
Red Status Light is off
An inactive light means one of two things.
It could mean your power cord is damaged or disconnected.
If that’s not it, you have a damaged transistor, capacitor, or diode.
Red Status Light Blinks 2 Times
Two red blinks mean your remote control is unlinked.
You’ll have to re-link it using the original dongle.
Red Status Light Blinks 3 Times
Three red blinks mean there’s a fault with the circuit board.
You’ll need to have your TV repaired.
Blue Status Light is on
The blue light means your TV has gone into protection mode.
Unplug it overnight, then plug it back in and see if it works.
If that doesn’t work, you have a hardware failure.
8. Factory Reset Your LG TV
You can use your TV’s control buttons to perform a hard reset.
This will erase all your settings and data, so you should exhaust all other options first.
To hard reset your TV, follow the following steps:
- Press and hold the Home button or Settings button on your TV until a menu appears.
- Using the volume or channel buttons, go to “General.” Select it with your Home or Settings button.
- Select “Reset Initial Settings.”
- Enter your password to confirm. If you never set a password, it will be either “0000” or “1234.”
9. Contact LG Support and File a Warranty Claim
Your circuitry may have failed if you recently suffered a power surge, storm, or outage.
In that case, you’ll need to file a warranty claim.
LG warranties their TVs for 1 or 2 years, depending on the model.
You can search for your model here to find the relevant warranty information.
If you need to order any parts, you can contact LG with their email support form.
Alternatively, you can call customer service at (850)-999-4934 or (800)-243-0000.
Their phone lines are open seven days a week, from 8 AM to 9 PM Eastern time.
Alternatively, you may be able to return your TV to the store you bought it from.
And if all else fails, you can find a local repair shop to fix it.
A broken TV is no joke.
Hopefully, one of these methods got yours back into good repair.
Just make sure to follow the steps in order.
There’s no need to reset your TV if the only problem was your remote batteries.
Frequently Asked Questions
Is there a reset button on an LG TV?
However, you can reset your LG TV by using some of the other buttons.
Why is my LG TV unresponsive?
Without diagnosing it, it’s tough to say.
Try working through the repair steps, and see what works.