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TV makes loud electrical noise after 5 mins and turns off and back on.

TV Model Code: UN43NU6950FXZA

Version #: BZ01


After about 5 minutes of being on, my tv makes a very loud electical noise that lasts about 10 seconds. The TV then turns off and turns back on again. This will keep repeating. Sometimes it takes longer than 5 minutes before this happens. Maybe even 30 to 40 mins sometimes. But once it starts, it will just keep happening.


Does anyone have any idea what the problem is?

Samsung Moderator
Samsung Moderator

Re: TV makes loud electrical noise after 5 mins and turns off and back on.

Unplug the TV for 30 seconds.

  • Unplug the TV from the wall outlet or surge protector for 30 seconds, and then plug it back in

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.

Disable the Power On with Mobile option.

  • TVs that 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.

This type of issue will need to be addressed by having the unit serviced. you can use the following link to find a list of service centers near you that can do the repair:

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