Onn Roku TV Turns Off By Itself? – Reasons & Fix Guide

If you are wondering why your Onn Roku TV turns OFF by itself, keep reading!

Here we’ve managed to solve the Onn Roku TV turning OFF problem in a matter of minutes by using some of the best-working solutions known to the community.

Let’s learn more!

The Onn Roku TV is turning OFF by itself because of power fluctuations related either to the power equipment or the wall outlet (source). The Onn Roku TV could also be overheating and as a measure of perseverance, the device shuts OFF.

Before we jump into the solutions, let’s learn the reasons why Onn Roku TV is turning OFF.

5 Reasons Why Onn Roku TV Turns ON and OFF By Itself?

There is no official explanation from the manufacturer.

However, if you have a little bit of technical know-how about smart TVs, you can tell that the problem is most likely related to driver updates, overheating, or power supply.  

Here are some possible reasons why your Onn Roku TV might turn off by itself:

Faulty or Broken Power Supply 

Your TV may go off suddenly if the built-in power supply is broken. This is the most likely cause if the TV is old.

There is only 1 cable in the equipment and the two factors, TV port and source.

The TV Is Overheating

If you are in the habit of binge-watching TV shows, your TV may overheat due to running for hours at a stretch.

Immediately after your TV goes off by itself, touch the back of the TV. If it’s hot, overheating may be the reason the TV is turning OFF to cool down.

A Faulty HDMI Cable

HDMI cables tend to have subtle issues, and in some cases, an unnoticeable issue can be responsible for your TV going off. Testing an HDMI cable is easy. 

Just plug it out and then put it back in and If necessary, test using a different cable. 

Outdated Firmware

If you have not updated your Roku TV’s firmware in recent months, the firmware may cause some technical issues.

Sometimes your TV may work smoothly for several years without you having to update the firmware.

In some cases, you may need to update it frequently. 

Corrupted App/Data

When an app crashes, it can cause your TV to turn off.

The device may not even stay turned on for 60 seconds when one of the frequently used applications is causing the problem.

Let’s now learn how to target and solve problems with ALL of the above-described causes:

How to Fix When Onn Roku TV Turns OFF By Itself?

Onn Roku TVs, like most other smart TVs, are vulnerable to malfunctions. However, before drawing any conclusions, make sure to attempt each of the methods listed below.

If not solve the problem, by the end of the guide you’ll know where exactly the issue is coming from!

Try ALL of the following methods and rest assured that one of them will work: 

Method #1 Check the Power Source

A defective power socket may be the reason your TV is going off by itself.

As we’ve mentioned, power fluctuations are the primary reason why a device suddenly turns OFF or ON by itself.

Switch to another wall outlet, without plugging the TV into a power strip!

Another possibility for your Onn Roku TV to go OFF suddenly is the power cable.

Users need to thoroughly inspect the condition of the power cable and make sure that the TV port is not obstructed.

The power cable should be plugged into the TV’s port all the way in.

Tip: Test your power outlet by plugging in another device such as your smartphone!

Method #2 Inspect the HDMI Cable

The HDMI cable transfers video content to your TV. A loose connection or defect with the cable can cause the screen to flutter.

You can recognize this exact scenario when the TV screen goes black but the LED is still ON, as an indication that your television is still working.

Here’s how to make sure your HDMI cable is not the problem here:

1. Unplug the HDMI cable from the TV.
2. On the TV go to Sources and choose local content.
3. Test for a few minutes if your TV will turn OFF.
4. Plug the HDMI cable into the TV and observe the source device.

In case your TV turns OFF and not only the screen goes black, proceed with the next step!

Method #3 Reinstall a Particular App

Check whether your Onn Roku TV goes OFF only when a particular app is installed. 

Try to recall the last time your TV went OFF by itself and exactly what you were watching when the issue appeared.

Perhaps you were performing a task, such as downloading or streaming via a specific application. Maybe the problem appears only while in the menu?

Once you catch the buggy application, make sure to uninstall the app and test.

In case you’re not able to find any pattern in the issue’s behavior, continue ahead!

Method #4 Update the TV Firmware

Your device may be vulnerable to viruses and bugs if the firmware of the system has not been updated recently.

Update the firmware to make sure your streaming is seamless and without interruptions.

However, new applications along with old firmware do not go well together! 

Here’s how to update the Onn Roku TV operating system firmware:

1. Turn ON your TV and make sure it is connected to the internet.
2. Go to Settings and then System Options.
3. Find the Check for Updates option and select it.
4. Click on Update if such is available.

Once the update is completed, test whether your Onn Roku TV would continue to turn OFF.

Note: The update might take up to 20 minutes, based on how many missed updates there are.

Method #5 Check the Remote Control

When users ask “why does my Onn Roku TV keeps turning ON and OFF?”, the answer is simple!

Even if it sounds weird, the remote control might be responsible for turning ON and OFF your Onn Roku TV, without you noticing.

That would be the case if you’re also observing sudden changes in the volume or the Menu randomly appearing on the screen.

You need to check whether the Power Button on the remote is stuck.

Sometimes when we spill liquids the buttons get sticky, therefore stuck inside, constantly sending false commands to the TV.

Remove the batteries from the remote and test whether your TV will turn OFF by itself again. 

In case the TV continues to turn OFF, proceed with the next step!

Method #6 Reset the Onn Roku TV

If none of the methods so far managed to resolve the issue, reset the TV.

You only need to know that the factory reset will erase everything from the television storage including ALL applications and data that was saved.

Here’s how to factory reset Onn Roku TV in a few easy steps:

1. Press the Home Button on the remote.
2. Scroll down to find the Settings.
3. Move to the right and scroll down to select System.
4. Again, move to the right and choose Advanced System Settings.
5. Go to the right two times to find Factory Reset Everything.
6. Enter the Reset Code that has been provided on the right of the screen.
7. Wait for the TV to reset.

Once the reset is over, the TV would be in its initial state, just like when you’ve first taken the television out of the box.

Now you should test whether the Onn Roku TV will turn OFF by itself.

Note: The reset might take up to 15 minutes, so be patient!

Onn Roku TV Does Not Turn ON But Red Indicator Is On? 

At the bottom of your Onn Roku TV, there is an LED indicator that should be used as a guide to check the underlying problem.

The power supply can also be affected by some software errors, but you can usually address the issue by just keeping your TV unplugged for 10 minutes. 

Before you plug it back in, long-press the power button of your remote for about 30 seconds.

If that does not work, it is almost certainly a hardware issue. Well, if the device is still under warranty, you’re lucky.

Get in touch with the manufacturer for replacement or repair. And if your TV is no longer under warranty, reach out to a repair expert. 

Wrapping Up:

Now that we have discussed why your Onn Roku TV turns OFF by itself, it all comes down to figuring out the underlying cause and addressing it.

We hope that the solutions in this guide worked for you and for more relevant content, make sure to check our tech blog!