AMAZON FIRE TV No Sound

Here is step by step Video guide FYI

Step 1: Select "Setting" menu on your TV 

Step 2: Select "Display & Sounds" 

Step 3: Select "Audio"

Step 4: Select "Dolby Digital Output"

Step 5: Select "Dolby Digital Plus OFF"

Step 6: Adjust Settings on your Actual TV (Samsung, LG, Sony... etc.)