Disappointed: Thank you for purchasing the Samsung TU7000 TV. I am very sorry you are experiencing issues with your TV not displaying properly and blanking out. Please try the following troubleshooting steps: 1) Check the antenna and input cable connections 2) Check the antenna and HDMI cable connections 3) If the issue persists, define exactly what is wrong with the display. For example, mosaics and blocks, multiple lines or white dots, fixed horizontal, or vertical lines 4) Try changing channels using the remote control. Is the issue the same on all channels? 5) Press the Home button (looks like a house), select Source, choose another input source. Is the issue the same on all sources? 6) If the same problem persists, run a diagnostic test. (Home > Settings > Support > Device Care > Self Diagnosis > Picture Test) 7) If the problem disappears during the test, check your TV signal (Home > Settings > Support > Device Care > Self Diagnosis > Signal Information) to check the signal strength. Signal strength must be more than 20 dB (more than 4 bars on the icon) for stable signal reception Should you need further assistance, please contact Samsung Customer Support. 1) Phone: 1-800-SAMSUNG (ask for TVs) , Available 8 AM-12 AM EST 7 days a week 2) LiveChat: https://www.samsung.com/us/support/#contact_us_for_support 3) Facebook Messenger: https://www.facebook.com/samsungsupport 4) Twitter: https://twitter.com/SamsungSupport 5) The Samsung Members Community is also a great resource for getting help from Samsung moderators and customers: https://us.community.samsung.com If you have not already done so, we invite you to register your new Samsung product at: https://www.samsung.com/us/account/signin/?redirect=https%3A%2F%2Fwww.samsung.com%2Fus%2Fsupport%2Fregister%2F Registering your product gives you access to easy warranty support, convenient opt-in to special promos and offers, faster troubleshooting and service, and quick notification of system updates. ~ Samsung Solutions