Hi there, I'm very sorry that your TU7000 TV stopped working after setting it up. Samsung is committed to providing the best possible product experience, quality, and value. We back this Samsung TV with a 1-year limited manufacturer's warranty, including authorized repair for manufacturer defects, if purchased brand-new directly from an authorized seller. So we can better assist 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

Robert Z: Thank you for your review of Samsung’s TU7000 TV and for sharing your experience with the screen flashing. If your TV is out of the 1-year Manufacturer's Warranty, you can locate a service center in your area on Samsung's website. Go to Support (upper right corner) and select Schedule a Service Appointment. This will allow you to find a location nearest you to help you with your repair. Should you have additional questions or wish to troubleshoot the issue, please call us at: 1-800-SAMSUNG (ask for TVs), available 8AM - 12AM EST, 7 days a week. Samsung is committed to providing the best possible product experience, quality, and value, and we are always here to help with any of your questions or concerns. - Samsung Advisor