Hi Zooby Dot, Thanks for sharing your experience. If your TV is powering on by itself, there are a few settings and external triggers to review: 1. Power On with Mobile – Your TV may be connected to the SmartThings app or other networked devices. To stop wake signals, turn this feature off: Settings > All Settings > Connection > Network > Expert Settings > Power On with Mobile = Off 2. Check for Active Timers – Go to Settings > All Settings > General & Privacy > System Manager > Time > Timer Settings, then disable any On Timers or Sleep Timers 3. Anynet+ (HDMI-CEC) – If your TV is connected to external HDMI devices, one of them may be triggering power-on behavior. To disable this feature: Settings > All Settings > General & Privacy > External Device Manager > Anynet+ (HDMI-CEC) = Off 4. Software Update – Make sure your TV is up to date: Settings > Support > Software Update > Update Now If you’ve ruled out all the above and your TV still powers on unexpectedly, try unplugging it for 30 seconds. Should the issue continue, please call Samsung Support at 1-800-SAMSUNG (8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun). LiveChat agents are also available through the ‘Support’ link on our website. ~ Samsung Advisor

Hi Dave, Thank you for your feedback. If your U7900F TV freezes or becomes unresponsive: 1. Cold boot – Hold the Power button on your remote for 5+ seconds until the TV restarts. 2. Update firmware – Home > left directional key > Settings > Support > Software Update > Update Now 3. Run Device Care – Home > left directional key > Settings > Support > Device Care > Start Device Care If issues continue, contact Samsung Support at 1-800-SAMSUNG (8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun). LiveChat is available under the ‘Support’ link on our website. ~ Samsung Advisor