Hi Rail 179, If your TV turns on by itself, please try these troubleshooting steps. 1. Unplug the TV from the wall outlet or surge protector and leave it unplugged for 30 seconds. 2. Check the power cord to see if there is any visible damage. 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 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 > All Settings> General > Network > Expert Settings > Power On with Mobile, and turn the setting off. If the TV continues to turn on by itself continuously, please contact our Samsung Customer Support at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Our LiveChat agents are also available by clicking on the ‘Support’ link on our website. ~ Samsung Advisor

Hi None, We are glad that you reached out to us regarding the display issues you are seeing on your Samsung DU7200 TV. I have a few recommendations that may resolve the line you are seeing on your screen. First, let's ensure you are running the latest Firmware. Go to Settings> Support> Software Update. Next, run a diagnostic test. Go to Home > Settings > Support > Device Care > Self Diagnosis > Picture Test. If there are no issues during the Picture Test, this means your TV is working fine. To identify and fix the issue, first, try replacing the cable of the external device that is showing lines. - If the lines still appear after replacing the cable, troubleshoot the external device. - If lines appear during the Picture Test, proceed to the next step. If lines appear during your test, the TV will need service. Please reach out to us so we can schedule a warranty appointment. 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. LiveChat with an agent, as well as manuals, software, and warranty info, can be found at the ‘Support’ link on our Samsung website. ~ Samsung Advisor