Hi Mac1, Thank you for sharing your experience with your U7900F TV. Samsung’s accessibility features Learn TV Remote and Learn Menu Screen are designed to help users get familiar with the remote and menu layout – without affecting normal TV operation. • Learn TV Remote: Pressing any button (except Power) will announce the button name and function, helping users learn their location and purpose. Enable via: Settings > All Settings > General & Privacy > Accessibility > Learn TV Remote; Exit by pressing the Return key twice. • Learn Menu Screen: As you navigate your TV menus, the TV will announce each menu item and its function - without applying any changes. Enable via: Settings > All Settings > General & Privacy > Accessibility > Learn Menu Screen; Exit by pressing the Return key twice. If you need additional assistance, please don’t hesitate to contact Samsung Support at 1-800-SAMSUNG, available from 8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun. You can also visit the Samsung website and click on ‘Support’ for: • Live Chat • Manuals, Software, & Warranty Info ~ Samsung Advisor

Hi MNOIM, Thank you for sharing your experience with your U7900F TV. If your screen goes black or you're intermittently losing picture and no external device is connected, please try the following: 1. Check for signs of power. Press the Home button on your remote - if the menu appears, the TV is powered on and the issue may be with the signal or source. 2. Confirm the red standby light is functioning. When off, the standby light should be on. When the TV is in use, the light should turn off. If the standby light is off at all times, your TV may not be receiving power. 3. Run a Picture Test to rule out hardware issues: Home > Settings > Support > Device Care > Self Diagnosis > Picture Test 4. Update your TV's firmware if the screen stays on long enough: Settings > Support > Software Update > Update Now 5. Factory Reset if the issue persists: Settings > General & Privacy > Reset > Enter PIN (default: 0000) If the screen remains black and you’re unable to access any menu, the TV may require service. Please give us a call at 1-800-SAMSUNG (8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun), or visit the ‘Support’ section on our website to chat live with an agent. ~ Samsung Advisor