Original topic:

UN65MU8000F TV turning off and on to blank screen

(Topic created: 09-08-2021 12:46 PM)
hamberg
Asteroid
Options
4k, 8k and Other TVs

Randomly started, worked fine at night, the next morning would not turn on (fully). Will shut off from the remote but when you press the (remote) power button it cycles on and off (right side of the screen brightens but does not turn of fully). Scoured the web and everything says to go to "settings"  to troubleshoot, which I can't as the set will not go one. 

Any suggestions? 

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SamsungCaleb
Samsung Moderator
Samsung Moderator
Options
4k, 8k and Other TVs

I understand how this may be frustrating and want to help have you tired the following troubleshooting steps? 

 

By default, some HDMI devices are set to turn the TV on when they turn on. This feature is Anynet+, also known as HDMI-CEC, and allows you to control both devices with your TV remote. If you want to turn on your devices separately, you can turn off Anynet+ in Settings > General > External Device Manager, but you will no longer be able to use your TV remote for both devices.

  1. Unplug the TV for 30 seconds.

    Unplug the TV from the wall outlet or surge protector and leave it unplugged for 30 seconds.

  2. Inspect the power cord for damage.

    Check the power cord to see if there is any visible damage. If the power cord appears to be damaged. You can get a replacement at samsungparts.com.

    You can search for your TV model to find the exact power cord you need.

  3. Plug the TV power cord back into the wall outlet.

    If you were using a surge protector, bypass it for now and use a wall outlet.

  4. Try to update the software.

    In some cases, a software update can correct the problem. There is a risk, however. If the TV turns off during the software update, it could damage the TV. Updates can take up to 30 minutes depending on network speed, so if the TV is not turning off too frequently, try updating the software.

  5. Disable the Power On with Mobile option.

    TVs which can connect to SmartThings can be turned on using compatible devices, sometimes automatically. However, if abnormal "power on" signals are sent through the wireless network, they will trigger this function and make the TV turn on.

    If you do not want this function, navigate to Settings > General > Network > Expert Settings > Power On with Mobile, and turn the setting off.

If the troubleshooting steps did not help above then Service is required. Here are a couple of options based on your warranty. 

- If your unit was recently purchased, you can check with your retailer on their return/exchange processes.
- If you have an extended warranty you can reach out to them to have service set up. 
- If you're within the one year warranty, you can Private message me or one of our moderators with your full model and serial number to have service setup
- If you're OUT of warranty, you can use this link below to find a service center in your area. 

https://www.samsung.com/us/support/service/locations/


Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.





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hamberg
Asteroid
Options
4k, 8k and Other TVs

How do I get to: Settings > General > Network > Expert Settings > Power On with Mobile, if the screen is blank???

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SamsungLarry
Community Manager
Community Manager
Options
4k, 8k and Other TVs

I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case by case basis please provide the full model code and the serial number of the device as well as your best contact phone number, name, and email.  
 
Send a message on Facebook 
 
Send Message on Twitter 
 
Send Message to Moderator







Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.





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