Hi Betty, Thank you for your feedback regarding lip sync issues on your Samsung U7900F TV. Audio delays can sometimes be related to the content source, but if you're noticing this issue across multiple inputs or apps, there are a few settings to try depending on your setup: If you're using external audio (e.g., a soundbar or receiver): 1. Adjust the Digital Audio Delay. You can manually sync the audio with the video: Settings > All Settings > Sound > Expert Settings > Digital Output Audio Delay 2. Enable Pass-Through Mode. This allows the audio signal to bypass additional TV processing, reducing delay: Settings > All Settings > Sound > Expert Settings > Digital Audio Output Format > Pass-Through If you're using the TV’s built-in speakers: 1. Run a Software Update. Firmware updates may improve system performance, including audio sync: Settings > Support > Software Update > Update Now 2. Cold Boot Your TV. With the TV on, hold down the power button on your remote until the TV turns off and back on. This can resolve temporary sync issues. If the problem persists after trying these steps, we’d be happy to help with additional troubleshooting or arrange service if needed. Please contact Samsung Support at 1-800-SAMSUNG (8AM – 9PM EST Mon – Fri, 8AM – 6PM Sat – Sun). You can also LiveChat with an agent or explore additional resources on our website by clicking the ‘Support’ link. ~ Samsung Advisor