JC LEE: If you've switched on your TV and the sound comes through fine, but you're not seeing any picture; there are 3 potential issues. 1) A connection issue; the most common problem. Where there is a bad connection, faulty cables or improper installation. 2) An issue with the device connected to the TV. There may be a video output setting on the device that you must set properly before it will output to the TV. 3) There is something wrong with the TV, which will require a technician to assess the TV and find a solution. Please contact Samsung Customer Support for assistance in diagnosing your issue and troubleshooting at 1-800-SAMSUNG (available 8AM -12AM EST, 7 days a week) Or visit us on the Samsung website and click on the SUPPORT link in the upper right corner for: 1) Contact Us Options (LiveChat, Remote Support, Facebook, Twitter) 2) Product Support 3) Manuals and Downloads 4) Warranty Info 5) Product Registration: 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 6) Samsung Community: A great resource for getting help from Samsung moderators and customers and more 7) …and more product, repair, order, and care options Again, thank you for taking the time to share your thoughts on this product. Your feedback helps us continuously deliver best-in-class products and service. ~ Samsung Solutions