If you're seeing no-sound on your Vizio TV, the steps below walk you through the most common fixes.
If there is no audio, first check if other apps have sound. If they do, check the Hulu/Disney+ audio settings (some shows default to "Surround Sound" which your TV may not support). Switching the audio track to "Stereo" or "English" usually restores sound.
TS Toolkit Link: /apperror/no-sound/
SmartCast has no per-app cache option.
1. Power-cycle the TV: turn it off and unplug it for 1 minute.
2. If the issue continues, reset apps via Menu > System > Reset & Admin (note this affects all apps).
App updates install automatically on Vizio SmartCast.
Menu > Admin & Privacy > Check for Updates.
Press power button on remote or TV.
Press power button on remote or TV.
Then unplug from the power source.
1.Unplug modem from wall.
2.Wait 1 full minute.
3.Plug modem into wall, wait a few minutes for modem to reconnect to the internet.
Settings > System > Reboot TV.
D Help Site: https://help.disneyplus.com/article/disneyplus-streaming-issues
H Help Site: https://help.hulu.com/article/hulu-audio-issues
Still stuck? Open the full interactive toolkit to track every step: