Samsung TV model un50nu7100f doesn't turn off manually

[useri0B0tDMvEp]

Samsung TV model un50nu7100f doesn't turn off manually, remote control doesn't works also.

I tried many times:

Disconnect Power cable + Press/Hold the button under the brand name for 60 secs, nothing happens.

Sometimes it takes days and the TV turned on automatically?!!!

Can you help?

Can you share the Schematics and Service Manual?

Thank you in advance for your help.

[MrLarry · Accepted solution]

Try the troubleshooting here:https://www.samsung.com/us/support/troubleshooting/TSG01108742/ If this does not help 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.  
 
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