Hi Flex, Thank you for your purchase. When connected to an external device via HDMI, please ensure you have these settings enabled: 1) Set Sound Output to the external speaker by going to Settings > All Settings> Sound > Sound Output. 2) Check whether Digital Output Audio Format is set to Pass-Through by going to Settings > All Settings> Sound > Expert Settings > Digital Output Audio Format > Auto. If you need further assistance, we would be happy to help! Please feel free to contact Samsung Support at 1-800-SAMSUNG, available from 8 AM to 12 AM EST, seven days a week. You can also chat with us on Samsung.com for immediate assistance. ~Samsung Advisor

Like2tronics, We appreciate you sharing your experience with the DU6900 TV. Your feedback regarding image brightness is essential to us and will be shared with our internal teams. If the image you’re seeing isn’t to your liking, there are several picture settings you may want to adjust. Go to Home > left direction button > Settings > All Settings > Picture > Picture Mode and select the mode that best fits your usage: 1. Standard: Is the default mode suitable for general viewing environments 2. Dynamic: Makes the picture brighter and clearer in bright viewing environments 3. Eco: Provided to save energy 4. Movie: Suitable for watching TV or movies in a dark room 5. Filmmaker Mode: Provides source content just as the creators intended. If the image is defined as Filmmaker Mode, it’ll automatically switch to Filmmaker Mode while watching. You can also fine-tune your picture with expert settings such as brightness, contrast, sharpness and more (All Settings > Picture > Expert Settings). For further assistance with settings adjustments, please contact Samsung Customer Support. You can 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 Pro