Hi Charlie, We appreciate your feedback regarding the screen abnormalities you’re seeing on your DU7200 TV. Please run a Picture Test to determine if the problem is caused by the TV. Picture Test displays a high-definition picture you can examine for flaws or faults. Go to Settings > Support > Device Care > Self Diagnosis > Picture Test. If this occurs on all sources and the picture test, this may require service. For help with setting up a service appointment, please contact Samsung 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 Andy, Thank you for reaching out to us. 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