Hi Doomstyker, Thank you for sharing your experience with Samsung’s U8000F. If your TV is displaying lines on the screen, we recommend the following steps to help isolate the issue: 1. Check all input cable connections for any external devices (e.g., HDMI, streaming boxes, Blu-ray players) 2. Switch channels or inputs to see if the issue appears across all sources 3. Run a Picture Test to check for panel-related issues: Settings > Support > Device Care > Self Diagnosis > Picture Test 4. Perform a cold boot by holding the power button on your remote for about 10 seconds 5. Ensure your TV has the latest software installed: Settings > Support > Software Update It is also possible that the TV was damaged during transit, if care was not taken. For further assistance, please contact Samsung Support at 1-800-SAMSUNG, 8AM – 12AM EST, 7 days a week. LiveChat and additional support resources are also available through the Support link on our website. ~ Samsung Advisor

Hi Copycatjet4, Thank you for reaching out to us. The coax cable is located on the back of the TV. For further setup assistance, please utilize this guide. You can also call us with any questions you may have. Call us at 1-800-SAMSUNG, 8AM - 12AM EST, 7 days a week. You can also LiveChat with an agent at the ‘Support’ link on our website. ~ Samsung Advisor