Hi Beehoover,<br /><br />Thank you for reaching out and letting us know about the sound issues you are experiencing on your N5300 TV. I have a few troubleshooting tips that may resolve your issue. <br /><br />First, for both TVs, let&#39;s ensure you are running the latest Firmware on your TV. Go to Settings&gt; Support&gt; Software Update. <br /><br />If you are hearing a loud static noise, it could be caused by electrical feedback. I recommend the following: <br /><br />1. Arranging the cables and making sure the TV has good ventilation will keep it quiet.<br /><br />2. Check the cables.<br /><br />Make sure all cables are connected firmly to the proper, color-coded inputs on the TV and on the external devices.<br /><br />3. Replace the audio connection cable.<br /><br />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.<br /><br />4. Try connecting a different external device to the same input on the TV.<br /><br />Connect a different device to the same input on the TV using the same connection cables. <br /><br />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.<br /><br />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.<br /><br />If your TV continues to have static noise, please call us for service. <br /><br />Next, for your TV that is experiencing low volume, there are several volume features you can adjust, which may improve your audio experience.<br /><br />1) Auto Volume automatically adjusts the sound to a certain level when changing channels or switching to another external input. Go to Settings &gt; All Settings&gt; Sound &gt; Expert Settings &gt; Auto Volume.<br /><br />2) Adaptive Sound automatically adjusts to a specific volume level while watching TV. The TV analyzes your volume usage history by time period to automatically adjust the volume when you use an app or switch to an external input source. Go to Settings&gt; All Settings&gt; Sound&gt; Sound Mode&gt; Adaptive Sound.<br /><br />3) Several Sound Modes are likewise available to meet your personal preferences: Home &gt; Settings &gt; All Settings&gt; Sound &gt; Sound Mode <br /><br />Also, some sources have their own volume control, which might need to be set higher. Please check the volume control of the external device (cable box or satellite box, DVD, Blu-ray, etc.) connected to your TV. Also, check the cable connection between an external device and the TV and then try the cable connection again.<br /><br />If you continue to have issues, please call us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. LiveChat with an agent, as well as manuals, software, and warranty info, can be found at the ‘Support’ link on our Samsung website.<br /><br />~ Samsung Advisor