Onn Roku TV Overheating Message: Causes and Solutions

There are several reasons why your Onn Roku TV might be overheating and displaying the message:

“Your device is overheating. Unplug it and let it cool down.”

Essentially, this warning appears on the screen when the TV detects that its temperature is too high, either in the power board or the mainboard.

The threshold for overheating may vary depending on the model and size of the TV, but it is typically around 60°C (140°F).

TV is equipped with a built-in thermometer that measures the temperature of the TV’s circuit board.

If the temperature surpasses the threshold, it triggers the overheating message and attempts to lower the temperature by reducing brightness, turning off the speakers, or shutting down the TV.

How To Turn Off ONN Roku TV Overheating Notification

  • Move the TV to a cooler place.
  • Ensure adequate airflow around the TV.
  • Try to replace the power supply board or main board.
  • Try installing a free HDMI extender to help move the stick away from the back of your TV.


Here are the detailed guidelines:

Step 1: Unplug the TV Instantly

This is the very first step.

Whenever you encounter this message, disconnect the TV from the power source right away and then let it cool down for about 10-20 minutes.

After it has cooled down, think carefully about why the TV or the streaming stick is overheating!

Is it due to improper ventilation or high ambient temperature?

Step 2: Make Sure the TV Is In Cool Temperature

Poor ventilation is one of the main reasons your Onn TV may overheat.

Ventilation is the process of allowing air to circulate around the TV, which helps to dissipate the heat generated by the TV.

If the TV is placed in a tight space, such as a cabinet, a wall mount, or a corner, the airflow may be restricted, and the heat may accumulate inside the TV.

So, move the TV to a cooler place.

This will help to lower the TV’s temperature and possibly stop the overheating message. Also, avoid placing the TV in direct sunlight, near a heater, or in a poorly ventilated room.

The best practice is to leave some space around the TV, at least a few inches, to allow air to circulate.

Step 3: Reduce the Brightness

Just unplugging and moving the TV to a cooler place doesn’t fix the issue all the time, and you will encounter the same issue again.

If you use the TV for a long time or for intensive tasks, such as streaming 4K content or playing games, it can generate more heat than usual. This can also happen if the TV is running multiple apps or channels at the same time.

So what should you do?

First, reduce the TV’s brightness level below 40% and contrast to 50%.

Then avoid using the TV for a long time or for intensive tasks.

If you do use the TV,

  • Take breaks and let the TV cool down.
  • Close any apps or channels that you are not using.
  • Turn off the TV when you are not watching it.

Tip: If the TV is running outdated or corrupted software, it can also cause glitches and errors that can affect the performance and temperature of the TV. So update the firmware if there is one available.

Step 4: Try Replacing The Power Supply And Main Board

If you think replacing the power board or the mainboard is worth the money rather than buying a new one, I suggest you do this.

But how do you know which board is the problem?

Simple: As soon as the TV displays the ‘overheating’ message, turn off the TV and open the back panel. Now check carefully which board is more hot or has a burnt smell.

That is the board that is causing the overheating problem.

You can also use a multimeter to test the voltage and current of the board and compare it with the specifications on the board label.

If the board is faulty, you will see a significant difference in the readings.


Q: How hot is too hot for Onn Roku TV?

There is no exact temperature that is too hot for Onn Roku TV, as it depends on various factors, such as the model, the resolution, the usage, and the environment.

However, as a general rule, you should avoid exposing the TV to temperatures above 85°F (35°C) or below 32°F (0°C).

Q: Can Onn Roku TV catch fire?

Onn Roku TV can catch fire if it overheats excessively and is not unplugged or cooled down in time.

This can happen if the TV is placed near flammable materials, such as curtains, carpets, or papers, or if the TV has a faulty or damaged power cord or internal component.

To prevent this, you should follow the tips mentioned in this article and unplug the TV immediately if it overheats.

Q: How long does Onn Roku TV last?

The lifespan of Onn Roku TV depends on the quality, the usage, and the maintenance of the device.

On average, most TVs last for about 7 to 10 years, but some may last longer or shorter depending on how often and how well they are used and cared for.

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