Hitachi TV Keeps Turning Itself Off and On? Try Quick Fix!

Is your Hitachi TV constantly turning off by itself without any explanation? If so, what should you do to stop it from doing this?

After our day has been busy, it becomes quite a hassle when we want to watch something on the TV after taking time from our day and it starts behaving strangely and keeps turning off and on automatically.

Whether your Hitachi TV keeps turning itself off or it keeps switching On and Off without your input, there can be several reasons for this and I will help you in getting it resolved.

This issue first occurred to me while I was watching a movie on my Hitachi TV and all of a sudden it turned off. At first, I thought it might be a power failure that caused this, but to my surprise, it began doing this more often, and I became annoyed and curious at the same time.

It was my initial belief that smart TVs have issues due to hardware failure, mainboard failure, or T-Con board failure, but I realized that not all issues that occur are due to hardware crashes, and sometimes the problem is due to minor glitches.

Fortunately, I stumbled upon several Hitachi Smart TV users reporting the exact same issue and I was not alone, I continued the troubleshooting.

Aside from Sleep Mode, CEC feature, and any minor system glitch, Hitachi TV can also keep turning itself off and on automatically if the hardware fails and/or overheats.

In this article, I will explain why your Hitachi TV keeps restarting without input, and how to prevent it from happening again.

Why does Hitachi TV keep Turning Off and On Automatically?

Hitachi TV also experiences problems including the random restarting issue we are discussing, although this is not always associated with hardware failure.

In some cases, it keeps turning itself off due to the sleep mode triggered when the TV remote is not being used for quite a while, while in other cases the CEC feature or the TV software malfunction, leads to this behavior.

Hitachi TV restarting itself repeatedly

Furthermore, the hardware issues cannot be ignored altogether, as users have reported that their TV turns off after a period of time, usually because the back panel overheats, or the Mainboard and T-Con boards become faulty.

Therefore, all possible factors that may cause your Hitachi TV to automatically turn on and off are listed below:

  • Sleep Mode is activated
  • CEC Feature
  • Software issue
  • Faulty Mainboard or T-con board
  • Overheating

In order to help you find out what the problem is on your end and how to resolve it, I have created the below guide. Make sure that you follow it exactly in the same order.

How To Fix Hitachi TV’s Automatic Restarting Issue?

As a first step, if your Hitachi TV turns itself On and Off continuously, identify the actual cause. Whether it’s a feature or a software issue, or a hardware issue.

By disabling sleep mode and CEC on the TV, and then manually resetting it, we can rule out software or feature issues. If the TV is still rebooting automatically after doing that, we need to move on to the next step of troubleshooting.

If your Hitachi TV keeps turning on and off, you should do these things:

  • Disable Sleep Mode
  • Turn Off CEC feature
  • Hard Reset TV
  • Inspect Cables and if TV Overheating
  • Check Mainboard and T-Con board

Disable Sleep Mode

The Sleep Mode or also known as the Auto TV Off feature is a feature on Hitachi TVs, and other smart TVs as well, that allows you to set a certain period of time in which the TV will turn off by itself if it doesn’t get a response from the remote or buttons on the panel.

There might be a timer set on your TV by default that would turn it off after a certain amount of time, so you need to disable it so the TV stays awake and only turns off when you provide input.

You can turn off the Auto Sleep Mode on Hitachi TV by following the below steps:

  • On your remote, press the MENU button.
  • Navigate to Settings and click OK.
  • Press OK after you scroll down to More.
  • Now, Select Auto TV OFF from the drop-down menu.
  • The Auto TV OFF can be activated at the desired time, or you can just turn it off.

Turn Off CEC feature

As a feature of recent smart TVs, the CEC feature is quite amazing, but since it is still in its infancy, there are some glitches with it, and you should turn it off if your TV has it.

The CEC feature on smart TVs basically enables the TV to be controlled by any other remote control in your home, including your Soundbar, Audio Receiver, or any other device at your home that is controlled by the TV remote.

Hard Reset TV

If there is an incomplete software update or any system issue triggering your TV to turn off, you should do a reset of it, and here are the steps to do so.

  • Turn off the TV and unplug it from the wall outlet for 10 minutes.
  • Hold down the power button on the TV for 60 seconds.
  • Connect the TV to the wall and turn it on.

Inspect Cables and if TV Overheating

After being used for quite some time, a faulty power cable and the TV’s overheating will cause the TV to turn off automatically to prevent any damage.

Make sure the power cable and the socket where it is plugged are in good condition and tightly connected.

The Hitachi TV overheats and then turns itself off automatically, and actually, this is quite common.

Overheating Hitachi TV

The TV boards have a circuit breaker that gets triggered when they cross a certain temperature threshold in order to avoid any damage to the TV.

I would recommend that if you haven’t cleaned your TV in quite some time, you remove it from the wall, remove the back panel, and use a brush and leaf blower or hair dryer to clean it.

When you have cleaned it, you can put it back on the wall, and then you can use it normally.

Check Mainboard and T-Con board

It is highly likely that with those steps the issue has already been resolved but if for any reason, even after carefully following all the steps and waiting for some time, the issue still persists, this suggests the issue is with the TV’s mainboard or the T-con board.

Mainboard and T-Con of Hitachi TV
Mainboard and T-Con of Hitachi TV

You can remove the panel and check the circuit boards carefully if you have some experience with it.

You can get help from a technician if you see anything strange, or order another board and plug it in yourself.

Wrapping It Up

Hopefully, with the help of the above guide, you will be able to fix the problem with your Hitachi TV and be able to watch shows again without any hassle.

If you need any help or have any issues with the above steps, please let me know in the comments.