Hi Mich, Thank you for sharing your experience with us. We recommend you try a Sound Test under Support > Self Diagnosis > Start Sound Test. Another way to check the source volume is to test an internal streaming source like Netflix or YouTube to compare. If you are hearing a loud static noise, it could be caused by electrical feedback. I recommend the following: 1. Arranging the cables and making sure the TV has good ventilation will keep it quiet. 2. Check the cables. Make sure all cables are connected firmly to the proper, color-coded inputs on the TV and on the external devices. 3. Replace the audio connection cable. Replace the audio connection cable, even if it is an HDMI or RF coaxial cable. Then test again to see if the issue still occurs. 4. Try connecting a different external device to the same input on the TV. Connect a different device to the same input on the TV using the same connection cables. For example, if a cable box is connected using the component connections, try connecting a DVD player to the same input with the same cables. If there is no buzzing, crackling, or humming with the second external device connected, the original device (the cable box in this example) is the source of the noise. If you need more help, Samsung is here for you! Please 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

Hi Sadly, If you’re not receiving all channels, first ensure that your coaxial cable is securely connected to the TV. Then, run Auto Program: Home > Menu > Settings > All Settings > Broadcasting > Auto Program. Select Start to begin auto-programming, and then select either Air, Cable, or Both. - Select Air if you're using an antenna only. - Select Cable if you're using a cable box only. - Select Both if you're using an antenna and a cable box. You will get the most channels this way. If you're still having difficulties, please reach us on Facebook or Chat with us on the Samsung website. You can also reach us at 1-800-SAMSUNG / Available 8AM - 12AM EST, 7 days a week. ~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