Hi Mich, Thank you for sharing your experience with us. We recommend you try a Sound Test under Support > Self Diagnosis > Start Sound Test. Another way to check the source volume is to test an internal streaming source like Netflix or YouTube to compare. If you are hearing a loud static noise, it could be caused by electrical feedback. I recommend the following: 1. Arranging the cables and making sure the TV has good ventilation will keep it quiet. 2. Check the cables. Make sure all cables are connected firmly to the proper, color-coded inputs on the TV and on the external devices. 3. Replace the audio connection cable. Replace the audio connection cable, even if it is an HDMI or RF coaxial cable. Then test again to see if the issue still occurs. 4. Try connecting a different external device to the same input on the TV. Connect a different device to the same input on the TV using the same connection cables. For example, if a cable box is connected using the component connections, try connecting a DVD player to the same input with the same cables. If there is no buzzing, crackling, or humming with the second external device connected, the original device (the cable box in this example) is the source of the noise. If you need more help, Samsung is here for you! Please 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 Advisor