ONN TV Not Turning On: Why And How To Fix!

ONN smart televisions are a popular option among customers looking for quality electronics at an affordable price. Like all consumer electronics, ONN TVs will occasionally have their issues. One common problem is the mysterious black screen when the ONN TV won’t turn on!

If your ONN TV is not turning on, it could be due to a firmware issues, loose cable connections, incorrect input settings, faulty remote control, a power issue, or even a problem with the TV’s hardware.

Don’t worry – there are several easy ways to fix this without seeking professional support.  

Let’s explore the reasons why your ONN TV is not turning on, and how to fix it.

You can also check our guide on ONN TV Black Screen problem and how you can fix that.

Why Is My ONN TV Not Turning On?

ONN TV power on but not turning on

There are several hardware, software, and accessory issues that might be causing your ONN TV to not turn on. They include:  

  • Firmware issues.
  • Loose connections or power supply problems.
  • Problems with the remote control.
  • Software or hardware issues. 

You don’t necessarily need to diagnose the problem, though, in order to move forward with a solution.

You may be able to figure out what the issue was when you hit upon one of the solutions below that works for you.

Firmware Issues

If your Onn TV won’t turn on, chances are it’s a software issue. You can easily fix this issue by updating your ONN TV firmware.

Power Supply Problems

Check the power cord connection between the TV and the wall power outlet to ensure there is no power issue. It’s also a good idea to verify if the power source is functioning correctly.

To confirm if the outlet is working, try plugging in another device. If everything appears to be in order, experiment with a different power cord or adapter to eliminate any potential issues with these components.

Loose connections

It is possible that the issue is related to a loose connection of either the power cord or any other important cable, such as the HDMI cable.

Additionally, wear and tear on these cables could also contribute to this issue.

Problems with the remote control

If your Onn TV isn’t turning on, the remote control could be the problem. When the remote’s battery is low, there are problems with the IR signal, or even if the power button on the remote is stuck, your ONN TV may not turn on.

Hardware Issues

If none of above solutions resolve the issue, it’s possible that there’s a more complex problem with your Onn TV hardware that requires professional assistance.

This could be due to a fault in the internal circuitry or a malfunctioning component that may need repair or replacement.

Components that could be causing issues include the main board, power board, T-Con board, or even the TV backlight.

In such cases, we recommend reaching out to Onn customer support or visiting an authorized service center for further diagnosis and resolution of the problem. They’ll have the expertise to assist you and get your TV back in working order.

How Do You Fix An ONN TV That Won’t Turn On?? 

Why Is My ONN TV Not Turning On

Now that we’ve established what might be causing the ONN TV to not turn on, here are range of solutions to help you fix it.  

Check The Remote Control

Most ONN TV owners use a remote control to power on the TV. So, first check to make sure the remote is working! 

Check The ONN TV Remote Control

You can do a power cycle on the remote control, also known as a soft reset, which gets any excess electricity out of the device.

To do this:

  • Remove the batteries from the remote.
  • Press and hold down the remote’s power button for 30 seconds. 
  • Put the batteries back in.

If the power cycle didn’t work, there are more options:  

  • Try new batteries and make sure they’re in the right position with no corrosion. 
  • Press all the remote buttons to make sure none are stuck. 
  • Make sure there are no objects blocking the path from the remote to the TV.
  • Hold the remote closer to the TV when you hit the power button. 
  • Replace the remote with a new one.  

Check The Power Supply

Check The Power Supply

Even if it’s a power issue causing the TV to not turn on, the problem may not be with the television itself! Check the various components that carry the power to the device to make sure all is well. 

Unplug the TV from the wall socket, and then:  

  • Remove any smart plugs or surge protectors (if you were using them) and try again. 
  • Try plugging a device that you know works into the wall socket to see if it works there. 
  • Alternately, plug the TV into a different socket that you know works to diagnose the issue. 
  • Make sure there are no kinks or knots in the power cord.  

Make Sure You’re Using ONN Brand Cables

It’s possible that the power cable is faulty and need to be replaced. Or, you may have chosen to use a power cord that is a different brand.

It’s always best to use the same brand power cord as your TV, so if you’re having issues getting your ONN TV to turn on, try using the original cables that came with your set.

If you no longer have them, contact ONN TV support or buy replacements online.  

Check The Power Button

Trying checking the physical power button located on the back or underside of the TV (depending on your TV model).

This solution is geared toward those who mostly use that button to turn on the set rather than the remote control. Accumulation of dirt and dust can cause the button to stick.   

Sweep around the button with your finger or a small dry cloth, then push it down several times with force to try to unstick it.    

Power Cycle / Soft Reset The TV

Power cycling can help fix an ONN TV that is not turning on due to a power issue. This manual way of refreshing the TV can drain all electrical power from the device and allow it to start fresh, clearing out any issues with the device’s non-permanent memory without erasing any of your settings.

To power cycle your ONN Roku TV:

  • Turn the TV all the way off and unplug the power.
  • Press and hold the physical power button on the TV (usually on the back on side) and keep holding it for at least 15 seconds.
  • Wait at least a full 30 minutes with the TV off and unplugged. This will let all residual power drain from the device. 
  • Plug the TV in and switch it on.  

This is considered a “soft reset” and while simple, it’s incredibly effective. 

Perform A Factory Reset

reset your ONN roku tv

If the power cycle process didn’t get the television to turn on, you might consider doing a hard reset on your ONN TV.

Most of the TV’s have a tiny pinhole labeled “reset,” often located near the USB ports. Sticking a pen, paper clip, or pin in the hole to press the reset button will do a hard reset on the TV.

But this could erase all your data and setting from the television, so only try this if you’ve exhausted other options first.

This hard reset called a “factory reset” because it restores the TV to factory settings – what the TV was like before you ever owned it and set your preferences. 

Clear The Cache / Reset With The Remote 

If the red light on the ONN TV is blinking but it won’t turn on, that means it’s getting a proper power supply and could just be stuck in standby mode.

You can fix this by clearing the Roku TV cache files using the remote control and a very specific sequence of keystrokes:

  • Press the Home button 5 times.
  • Press the Up Arrow button once.
  • Press the Rewind button twice. 
  • Press the Fast Forward button twice. 

Wait a few seconds and then, if this worked, the TV should restart and turn on.

If it didn’t work…try again! Some consumers report trying this at least three times in a row before it finally worked.  

Make Sure HDMI-CEC Is Set To “OFF”

Make Sure HDMI-CEC Is Set To “OFF”

If all else fails, it’s possible that there is an HDMI issue. Some Roku TVs have a flaw with the HDMI-CEC settings that prevent the TV from turning on.

In layman’s terms, HDMI-CEC allows two-way communication between the external device and the TV, allowing the device to turn the TV on and off automatically.

If you didn’t switch “control” back to the TV before turning it off, it may not “listen” to you anymore when you try to turn it back on.  

There is a way around this:  

  • Unplug any devices connected to the ONN TV via HDMI cable (like a game console) as well as any other external devices such as though with a coaxial cable for good measure. 
  • Turn the TV back on normally.  

Now that the TV is back on, you can prevent this going forward:

  • Press the Home button on the remote
  • Scroll to the Gear icon, then Settings > System > Control Other Devices (CEC)
  • Uncheck System Audio Control  

Check If The Backlight Is Defective

Finally, if all else fails, your backlight may not be working. This means your TV is on, it just doesn’t look like it’s on because the LED TV screen is not working anymore.

Most likely the backlight itself is fine but the power board or the voltage inverter has broken.

There’s a way to see if this is true: 

  • Go through the motions of turning on the ONN TV.
  • Walk close to the screen and point a flashlight at it. 
  • Change channels or go to the menu using the remote – in other words, cause movement on the screen. 
  • If you see faint images on the screen with your flashlight, that means the backlight is not working. 

While it is possible to replace these parts yourself, it is NOT recommended and best to consult a professional or contact support.

Contact ONN Customer Support

If you’ve gone through all these steps and the ONN TV still won’t turn on, check your warranty! You may still be eligible for a free repair or replacement.

The warranty and repair services for ONN products are handled by the American company Element Electronics.  

Armed with that info, contact ONN Roku TV support for additional help. ONN / Walmart support can be reached online at https://onntvsupport.com, via phone at 1-844-334-2355 (9am – 9pm ET daily), or via email at customerservice@onntvsupport.com.

ONN TV Preventive Measures and Maintenance Tips

Tips to keep your Onn TV in great condition:

  1. Keep it clean: Use a soft, dry cloth to regularly clean your Onn TV’s surface. Dust and dirt can affect its performance.
  2. Avoid direct sunlight: Protect your TV’s screen from damage and discoloration by placing it away from direct sunlight. Ensure proper ventilation by giving it enough space.
  3. Turn it off: When not in use, switch off your Onn TV. This not only saves energy but also extends its lifespan.
  4. Use a surge protector: Shield your TV from power surges and electrical disturbances by using a surge protector.
  5. Keep firmware updated: Check for firmware updates regularly. These updates enhance performance, address bugs, and fix issues.

To keep your Onn TV in top-notch condition and guarantee optimal performance for years to come, follow these preventive measures and maintenance tips.

Not only will they help you extend the lifespan of your TV, but they’ll also ensure a more enjoyable and immersive viewing experience.


Your ONN TV may not be turning on due to a power supply, hardware, or software issue. Most of these issues are fixable by power cycling your devices and checking and potentially replacing various components and accessories.

Follow the steps listed in this article to diagnose and fix your ONN TV’s issue. For a more serious problem, contact ONN TV support to get additional guidance.

Frequently Asked Questions

Why is my Onn Roku TV power light blinking?

ONN TV has a light on the front of the television that is either white or remains off and flashes when you press button on your remote. However, when the ONN TV has insufficient power, this light starts flashing red.

What do you do if your ONN TV has power but wont turn on?

If your ONN TV has power but it is not turning on, it might be due to low or dead battery. Replacing the remote battery will do the magic and bring your TV back to normal.

If this doesn’t work, unplug your ONN TV from the wall outlet, wait for 60 seconds and re-plug it back.

You can also hard reset your TV by pressing and holding down the power button on TV for 30 seconds and let all the TV power drain. Wait for 10-15 minutes and replug your TV back.

How much does it cost to fix a TV that won’t turn on?

The cost to repair a TV that won’t turn on can range between $60 – $475. (source)

Keshav Krishnan

I am an Engineer and passionate about Smart Homes and Home Improvements and spent years using, designing & working with Smart Home devices. I am on a mission to make Home Automation easy and affordable for everyone.

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