We recommend you restart your Fire Stick first to see if the FireStick Sound Not Working you are having is just a fluke. This is just like how when your computer or phone has an issue, the solution in many cases is to just power off your device and power it back on. So try this with your Firestick to see if it fixes your No Sound issue. To restart our device to fix current issue is one of the best ways if it came once in a while. If issue occurs again and again then get support dial toll free number 1-877-943-5444.