I couldn’t live without my TV. Let’s get this situated for you as soon as we can. Give this link a shot for me: https://www.samsung.com/us/support/troubleshooting/TSG01202526/#a-portion-of-the-tv-screen-is-black
Please read the link in its entirety to reap the full benefit of the troubleshooting. 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.
If your unit is out of warranty and you would like to receive quotes on service/labor from an Authorized Service Center near you, please visit: