Look for a deliberate audio-only state
Consider what happened immediately before the picture vanished. If somebody used the accessibility menu and sound continued uninterrupted, Picture Off is one plausible setting to inspect. It is different from a stream that freezes, an HDMI device with no signal or a television that has lost power.
Samsung’s Australian guide describes Picture Off as turning off the screen while retaining audio. That description gives you a concrete comparison: the TV remains responsive and the audio session continues. It does not establish that every black-screen event has the same cause.
Use the documented return control
Samsung says that pressing a remote button other than Volume or Power turns the screen on again while Picture Off is active. A volume adjustment can therefore leave the screen dark by design. Use an appropriate navigation button and observe whether the picture returns.
If it does, inspect the accessibility menu on that model and note the setting involved. The current guide places Picture Off within Accessibility, while warning that layout varies. There is no need to erase application data merely because an audio-only preference was enabled.
Preserve the distinction if the picture does not return
If the documented button action does not recover the display, record whether a television menu, input label or any other on-screen element can be shown. A programme-only black image and the complete absence of the TV’s own interface are materially different observations.
Provide Samsung or the device manufacturer with the TV model, selected input, whether sound continued and which remote actions worked. Avoid repeatedly toggling unrelated picture modes without noting their original state. The purpose of checking Picture Off is to rule in or rule out a specific intentional setting before escalating a different display or source problem.