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

Hi Big D, Thank you for sharing your thoughts on your DU7200 TV. The TV will upscale any content sent to it as best as possible. The closer your content is to 4K, the better the image will look on the screen. Here are some tips to help improve picture clarity: 1) HDMI cables are recommended for optimal HD viewing. 2) If you have an analog cable box or satellite box, upgrade to a digital cable box or satellite box. 3) Change the output resolution of your devices, such as digital broadcast receivers, IPTV, and set-top boxes, to UHD or HD. 4) You can further adjust your sharpness, brightness, contrast, color, and more by going to Settings > All Settings> Picture > Expert Settings 5) Choose a Picture Mode by going to Settings > All Settings> Picture > Picture Mode and choose from Dynamic, Standard, Natural, Movie, or Filmmaker Mode. 6) For optimal motion image performance, you may want to adjust the picture clarity setting by going to Settings > All Settings> Picture > Expert Settings > Picture Clarity Settings. Regarding your remote, first, please remove the batteries from your remote, and then hold the Power button for eight seconds to reset the remote. Then, reinsert the batteries and try to use the remote again. Next, Check if the remote is sending an IR signal. Take either a digital camera or use the camera on your phone or tablet. Point the remote at the camera, and then press and hold the Power button on the remote. As you hold the button down, look at the camera's screen. If the remote is sending an IR signal, you will see a colored light coming from the remote control. If you do not see the IR light, replace the batteries with fresh ones and try again. If you still do not see the IR light, then replace the remote. Should you ever have questions or need help with TV features, specs, or operations, we are here to help. You can call us 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