onn roku tv hdmi no signal

Wondering why Onn Roku TV HDMI no signal is displayed on the screen? Keep reading!

HDMI problems are a common occurrence with any TV compatible with the technology.

We will do our best to decipher the problem and understand what exactly is impacting the functionality of the HDMI equipment and how to approach the problem in chained steps.

If the Onn Roku TV says “No Signal” on an HDMI source, verify that the third-party device is securely connected to the TV and inspect the HDMI cable.

If that didn’t work, power cycle the external device and the Onn Roku TV, before testing with a new HDMI cable!

Let’s dig deeper!

Why Is There No HDMI Signal On Onn Roku TV?

why is there no hdmi signal on onn roku tv

One of the reasons that “No Signal” is displayed on the Onn Roku TV is that the HDMI connection is not secure.

If the external device is having issues or the HDMI input on the Onn Roku TV is faulty, “No Signal” means that the broadcast could not be displayed.

Here are the reasons why the Onn Roku TV says “no signal”:

  • The HDMI is not connected securely
  • The external device is not turned on
  • There’s a problem with the HDMI input
  • A fault with the third-party device
  • An issue with the external device’s input
  • Hardware malfunction with the HDMI cable
  • Hardware issue with the TV/external device

“No Signal” Onn Roku TV – Deciphered

Since the Onn TV uses Roku software, the errors given by the TV are identical to any other Roku device.

After a thorough inspection of the “No Signal” problem on all other Roku devices, we can conclude that the “no signal” message tends to be more hardware than software-related.

Onn Roku TV HDMI No Signal7 Working Solutions!

Tip: Apply our solutions in a consecutive order to resolve the problem faster!

1. Verify the Correct HDMI Source!

verify the correct hdmi source

If you’ve connected an external HDMI device to one of your Onn Roku TV’s HDMI inputs, you must select the corresponding source to view the device’s broadcast.

Selecting a source where no device is connected will result in the “No Signal” message given by your Onn Roku TV.

Follow these instructions to select the correct HDMI source on Onn Roku TV:

  1. Navigate to the “HOME page on the Onn Roku TV.
  2. Highlight the Settings icon and access the options.
  3. Scroll down to “TV INPUTS” and enter the section.
  4. Press on “SET UP INPUT” and select the correct source.
Tip: The source option in the menu of the TV is printed above the physical HDMI port.

2. Power Cycle the TV & External Device

power cycle the tv and external device

Performing a power cycle on both of the devices that are involved could resolve the HDMI problem.

The power cycle doesn’t delete anything from the device’s data, instead only cycles the electricity, completely discharging the device and restarting all operational services.

How to Power Cycle Onn Roku TV?

  1. Press the power button on the Roku remote.
  2. Once the TV shuts down, unplug the power.
  3. Wait for 60 seconds while the TV is unplugged.
  4. Connect the power adapter of the TV to power.
  5. Turn on the Roku TV and test the HDMI source.

How to Power Cycle Any Third-Party Device?

  1. Locate the power button on the external device.
  2. Press and hold the button for 5-7 seconds.
  3. Disconnect the power cable of the device.
  4. Hold the power button for 30 seconds.
  5. Reconnect the device’s cable and turn it on.
how to power cycle any third party device
Tip: The power cycle also helps with overheating and software issues on any device!

3. Reconnect the HDMI Source!

The fault could be related to a temporal issue with the HDMI connection. The proper way to handle this problem is to reconnect the external device to another available Onn Roku input.

This will not only refresh the HDMI signal but allow us to closely inspect the HDMI connectors!

reconnect the hdmi source

Here’s how to properly reconnect the HDMI device in easy steps:

  1. Unplug the HDMI cable from the back of your TV.
  2. Disconnect the HDMI from the input source device.
  3. Wait for 50-60 seconds while the cable is unplugged.
  4. Closely inspect both of the HDMI cable connectors.
  5. Also, inspect the HDMI port on your Onn Roku TV.
  6. Switch the HDMI cable sides and reconnect to the ports.
  7. Double-check whether the correct TV source is selected.
Note: If the source device is turned off, you’ll only see “No Signal” on the Onn Roku TV.

4. Switch to Another HDMI Input

It is possible that the HDMI input that you’re using on the Onn Roku TV is not functioning properly.

The result of this will be the “No Signal” message whenever a compatible device is connected to the malfunctioning port, so it’s best to test with another available HDMI input.

switch to another hdmi input
  • Onn Roku TVs have up to 3 x HDMI ports on the back/side TV panels!

Here’s how to switch the HDMI input on the Onn Roku TV:

  1. Unplug the external device from the back of the Onn Roku TV.
  2. Locate another unused HDMI input on the back or side panel.
  3. Connect the third-party device to the alternative HDMI port.
  4. Access the Source Menu on your Roku TV (steps in solution #1).
  5. Select the source of the new HDMI input for the external device.
  6. Determine if the broadcast of the third-party device will be displayed.
Note: Check the label above the new HDMI port to determine what source to select later!

5. Test with a Different HDMI Cable

The problem could be with the HDMI cable, rather than with your devices.

The best way to check whether the cable is faulty would be based on whether you’ve got a replacement at your disposal or not.

test with a different hdmi cable

There are three ways to test this theory in practice:

  • Connect your Onn Roku TV to another source device (same HDMI cable).
  • Connect the same source device to another TV (same HDMI cable).
  • Connect the Onn Roku TV to the same source device (different HDMI cable).

If you have the necessary equipment to test only one of the three approaches, you would be able to determine exactly where the problem is.

The best part is that you don’t actually need a replacement HDMI cable to know whether your cable is working or not.

Reminder: If you’re using a different Onn Roku HDMI input, always change the source as well!

6. Reset Onn Roku TV to Initial Settings

reset onn roku tv to initial settings

If the problem is with the TV’ software, a factory reset should fix the HDMI connection issue in almost no time.

However, the downside is that the factory reset will not only troubleshoot any issues but also delete all of the content, data, and settings on the Onn Roku TV so beware!

Here are the instructions to factory reset an Onn Roku TV:

  1. Press the “Homebutton on the Roku remote.
  2. Highlight the “Settings” tab and press “OK”.
  3. Access the “System” tab on the settings page.
  4. Navigate to “Advanced System Settings”.
  5. Press on “Factory Reset” > “Factory Reset Everything”.
  6. Follow the on-screen instructions to finish the reset.
Alert: Do not interact with the Onn Roku TV while the device is still factory resetting!

7. Onn Roku TV (4K) – Cable Length

onn roku tv (4k) cable length

One of the reasons why your Onn Roku TV keeps showing “no signal” might be due to the length of the HDMI cable. If you didn’t know for 4K streaming, the HDMI cable must not be longer than 3 meters or 10 feet.

In that regard, if your cable is longer than recommended, try downscaling the source device resolution down to Full HD (1920×1080) or even lower – SD quality.

In case the “no signal” message disappears and an image shows up, well, the length of the cable is the culprit.

Pro Tip: If you’re streaming 4K quality to your Onn Roku TV, we strongly recommend getting a reliable HDMI cable such as Monster HDMI 4K Ultra High-Speed 2.1 Cable.

Need More Help?

contact onn roku customer support

If you’re still experiencing issues with the HDMI of the Onn Roku TV, it’s best to seek some assistance from qualified professionals.

Simply visit the Onn Roku TV Support Page for further assistance and don’t forget to share what you’ve already tried in this guide!

Quick Recap:

Hence, whenever Onn Roku TV HDMI no signal message is displayed, power cycle both of the devices and use an alternative HDMI input.

If the issue persists, connect a different HDMI cable to test with and perform a factory reset on the Onn Roku TV system.

Follow our blog for more technical troubleshooting!

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

Nicole B