How To Fix Sharp TV Keeps Turning Off and On Issue

Are you experiencing the Sharp Aquos TV turn off and on issue? There are several factors that can cause this issue such as a overheating, old software update being used, power supply issue, or even a software glitch. To fix this you will need to perform several troubleshooting steps.

Sharp is one of the top TV brands that offers a lot of TV models that caters to everyone. From their popular Roku TV platform to 4K HDR models, there is a model available to cater to what the consumer wants. The Sharp Aquos TV is the company’s TV brand that has several outstanding features making it ideal as a home entertainment system.

Why does my Sharp Aquos TV Keep Turning Off and On By Itself?

Why does my Sharp Aquos TV Keep Turning Off and On By Itself?

A common problem you might experience with your Sharp Aquos TV is when it turns off on its own. This can happen randomly even when you are watching your favorite show and can be an annoying experience.

Here’s what you can do to fix the Sharp TV automatically turns off issue.

Solution 1: Hard reset your Sharp Smart TV

One of the factors that can cause your Sharp TV to have the repetitive restarting issue is due to a corrupted data stored in the TV memory. Hard resetting the TV will usually remove this corrupted data and fix the problem.

Hard reset Sharp Aquos

  • Unplug the power cord of the Sharp TV from the power outlet.
  • Wait for at least 5 minutes.
  • Plug the power cord back to the power outlet.
  • Turn on the Sharp TV using the remote control.

Try to observer if your Sharp TV turns off on its own.

Solution 2: Check the all the cables

You should make sure that cables connected to your Sharp TV are tight and secured. This includes the HDMI cables as well as the power cable.

If you have a faulty HDMI cable that connects your Sharp TV to a multimedia device then it’s very likely that the TV screen might turn black which makes it look like it has turned off. Try using a new HDMI cable and check if this will eliminate your Sharp Aquos TVs restarting issue.

Sometimes, even after trying multiple HDMI cables the same problem occurs . If your TV has another HDMI port then try connecting the HDMI cables to this port as the problem could be caused by the HDMI port you are originally using.

Solution 3: Check the power source

You need to make sure that the Smart TV is getting enough power from its power supply. If the power cord of the TV is connected to a power strip then disconnect it from the power strip and connect the power cable straight to the power outlet to ensure a stable power supply.

If your Sharp Aquos TV still turns off on its own then this might be caused by a power supply problems possibly due to a faulty power supply board or faulty main board. If this is the case then you will need to have your unit repaired at a service center.

Solution 4: Change the signal format of your Sharp TV

Sometimes changing the signal format of your Sharp TV is all it takes to fix this randomly turning off issue.

Changing signal format

  • Go to the Settings > Display Settings > Choose the Signal Format (1080p Sharp Signal Format)

After performing this step try checking if your TV is now functioning properly.

Solution 5: Turn off the sleep timer

The most likely reason why your Sharp Aquos is experiencing the screen turning off issue is because of an active sleep timer. When the timer reaches zero your TV will be placed in sleep mode. Try disabling the sleep timer of your television then check if this fixes the problem.

Disable sleep timer in Sharp Aquos

  • Press Menu on the remote control.
  • Press the back or forward keys to select Option.
  • Press the up or down keys to select Sleep Timer.
  • Select Off then press Enter.
  • Press Menu to exit.

Solution 6: Turn off HDMI CEC

CEC or Consumer Electronics Control allows HDMI devices to be controlled by one remote control. This means that if you have a multimedia player connected to your television and use its remote to turn it off then there’s a chance that your television will also turn off. To prevent this from happening you need to turn off the HDMI CEC feature.

Disabling HDMI CEC

  • Go to Menu.
  • Go to Settings.
  • Select Input Settings.
  • Select HDMI CEC.
  • Set to Off.

Solution 7: Get the latest television software update

Sometimes this issue can be caused by a software bug. Getting the latest software updates for your television will fix usually fix this problem.

Automatically update television software

  • Turn on your Sharp Smart TV and connect it to the internet.
  • Tap the Menu button on the remote.
  • Scroll with the navigation buttons and choose Settings.
  • Click on the Support option.
  • Choose Check Software Upgrade.
  • If there is an existing update, press the Yes button to begin the update.

Once the latest update has been installed try to check if the screen turning off issue still occurs.

Solution 8: Perform a Factory reset

Sometimes this problem can already be caused by a corrupted television software. Factory resetting your TV will usually fix any software related concerns.

Factory Reset TV

  • Turn ON your TV
  • Press Menu
  • Go to Setup
  • Find and select Reset
  • This step may ask pin code or parent control password if any was used before.
  • The default Sharp TV unlock code – is 1234

After performing the factory reset try to check if the issue still occurs.

Frequently Asked Questions

  1. Why does my TV keep restarting by itself?

    Try checking the cables first. The problem occurs if the connections are loose on the TV Set. The power outlet has small springs in the socket that can turn loose when you plug in the TV’s power cable.

  2. Does a Sharp Aquos TV have a fuse?

    The fuse is usually located on the power supply board of the TV, which is the board with the array of capacitors, resistors and heat sinks on it.

  3. How do I know if my television fuse is blown?

    Carefully check the fuse wire. If you can see a visible gap between the wires or a visible metallic or dark smear inside the glass, you have a blown TV fuse.

  4. How long do Sharp TVs last?

    A Sharp television usually lasts for five to seven years. However, its lifespan could increase to ten years depending on the frequency of use and how well-kept it is.

  5. Why does my Sharp TV keep turning on and off repeatedly?

    It's likely that this is caused by a loose power cord. Make sure that the power cord is secured tightly to the electrical outlet. If it is and the issue persists then you will need to contact Sharp customer service for assistance.

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Chad Buenaflor

Chad has been in the tech industry since 2000. He has a degree in Electronics Engineering and is interested in the hardware and software side of technology. Initially working for a Japanese semiconductor company as a Test Engineer for nearly 10 years, he then pursued his passion for internet technology by working for the support team of Time Warner Cable then finally joining TheDroidGuy as one of their troubleshooting and tech writers. On his free time he plays his favorite games on his PC, Xbox Series X, and Android phone.

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