If your Mitsubishi TV turns on then off immediately and you don’t know what is happening, we will get it all cleared up for you right in this post!
We will make sure to cover all details regarding the issue and provide proven solutions to the issue.
Your Mitsubishi TV could be turning on and then off if there is a power malfunction, enabled power saving/sleep mode, or a cable problem. To resolve the problem you’ll need to carry out an inspection of the entire setup and update your TV.
The oversimplified guide above might not be enough if your issue is more severe than unusual. In that regard, we’ll review all possible causes and how to approach each of them.
It is good to note that if this whole thing is a consequence of any type of hardware damage, you won’t be able to help it but deliver your TV for a repair.
Mind that any drop, water, or electrical surge-type of damage can lead to this situation, so proceed with caution.
If you’re sure that your TV is not hardware damaged, here is what might have gone wrong:
1. Insufficient Power
Problems with the power supply can include your cables, power source, and TV inputs.
2. Problem with Remote
If the remote’s power button is stuck, it is possible for it to make your TV restart each time.
3. Firmware Issue
In case there is a failed/pending firmware update, there could be random TV restarts.
Even if we didn’t manage to include your cause, with the upcoming methods, you will be able to 100% troubleshoot the issue with your Mitsubishi TV no matter what it is.
If you still haven’t tried to perform a simple restart on your Mitsubishi TV, it is worth the try before you proceed.
Some users have reported that this manages to fix the issue for them, so there is a great possibility that it would also work for you!
Once you’re ready with the restart it’s time to start excluding possibilities one by one, starting with our first method.
If the power button on your remote got stuck, even with the slightest pressure put on the surface of the remote, it is possible that you will trigger a restart of your TV.
In that regard we’re going to make sure that the issue is not coming from the remote by following the steps below:
- Take the batteries out of your remote.
- Press EACH button twice.
- Press the power button several times, applying more pressure.
- Put the batteries back in the remote.
- Turn on the TV and test.
This method is known as a power cycle and after it, you can be sure that the issue is not coming from the remote.
Another thing you can try that works great against this type of malfunction is the power refresh.
This is the same approach as you did with the remote in the previous method so let’s power cycle the TV.
Here is how to refresh the electricity in your Mitsubishi TV:
- Turn off your TV by pressing the power button on your remote once.
- Unplug the power adapter from the power source.
- Wait for 30 seconds to 1 minute for the best effect.
- Plug the power adapter back in and test out your TV.
It is possible that the power adapter you have plugged into your Mitsubishi TV developed issues over time.
First, check if the cable is loose. If that’s not the case, then unplug it and use it on another device that has the same power adapter port.
You must also ensure that the third-party device is functional because otherwise, you won’t be able to determine whether the power adapter is working or not.
Once you plug the power adapter into the other device, keep using the same device for several minutes to see if there are going to be any outages.
Pro Tip: To take the troubleshooting even further, our suggestion would be to use a different (standalone) wall outlet for the rest of this post.
If your Mitsubishi TV turns on then off immediately even after all the previous methods, then you might be dealing with a software issue. Now we’re about to describe how to update the firmware so pay close attention.
Note: If there is NO time to access the settings and perform an update before the TV turns off, skip this method.
To update your Mitsubishi TV’s firmware, follow the steps below:
- Press the menu button on your Mitsubishi TV remote.
- Press the settings icon and wait until you’re redirected into the settings tab.
- Once there, go to the firmware version tab and click on “check for updates”.
- Wait for your TV to scan for updates.
Once your TV has scanned for updates, any new firmware available for applying will appear on your screen with a download & install button at the bottom.
Click that button to initiate the update and wait for a couple of minutes for your TV to finish.
In this method, we will reset to default all audio & video settings and also get rid of corrupted files that could be responsible for the problem.
Here is how to reset ALL audio/video settings:
- Apply some force to the front panel to open it.
- Pull the corner to open the entire panel.
- Press on the Format & Guide buttons at the same time.
- Hold for about 3-5 seconds.
- In the TV menu, access the Audio/Video menu.
- Go to A/V Memory reset and press on it.
- Reset ALL available settings.
This will reset the entire audio/video configuration and hopefully resolve the issue. If however, the TV is still turning on and off, let’s perform a complete factory reset in our next method.
If nothing had worked so far, maybe a factory reset will make a difference.
Once you reset your TV, ALL settings and configurations will be permanently deleted, so we recommend creating a backup before you proceed.
Here is how to perform a factory reset on a Mitsubishi TV:
- Push the front panel to open it.
- Pull the corner to open the whole panel.
- Use a sharp object to reach inside the pinhole.
- Press & hold the System Reset button for about 1 minute.
- Wait for the LEDs to stop flashing.
- Turn on the TV and test.
If factory resetting your TV did not work either, then you might be facing a hardware problem that can be hardly helped at home.
You can always reach out to Mitsubishi TV customer support for additional assistance. With a little luck, they will identify the problem and provide you with directions.
To fix a Mitsubishi TV that keeps turning on/off, you can try performing a power cycle and a hard reset afterward. If that doesn’t work, inspect your remote and power adapter, update your TV and perform a reset if nothing else works.
Read Next: Why is Mitsubishi TV Flashing Green Light?
Now that you know why Mitsubishi TV turns on then off immediately, you can easily troubleshoot the matter with the methods we have brought upon you!
If it turns out to be a hardware malfunction at the end, don’t get discouraged and get in touch with a technician to take a look at your Mitsubishi TV.
Finn Wheatley holds a Master’s Degree in Computer Science from UCL, London. He helped small data science consultancy firms, helping large corporations to grow their data capabilities, deploy advanced machine learning-based analytics and troubleshoot tech-related issues. Check out more about him here.