Press the Home button on your remote to open the main screen.
Scroll up or down and select Settings.
To open the captions menu, select Accessibility. If Accessibility is not listed, select Captions.
Select Captions Mode and choose when captions appear.
Off - captions never appear
On Always - captions always appear (when available from the service provider). When service providers use their own settings, closed captions are activated within their channel.
On Replay - captions appear only after pressing the Instant Replay button on your remote (with content that supports instant replay)
When Mute - captions appear only when volume is muted. Note: this is not available on all Roku devices.