Name the sound that is missing or unwanted
Decide whether you mean the song’s guide singer, your own voice or the instrumental backing. Those are different elements of the session. A guide-vocal setting should not be treated as proof that a phone microphone has connected successfully.
For a practical rehearsal, a singer may want recorded assistance while learning a phrase, then remove it for a later run. Another person may hear the accompaniment clearly but no live voice. The first is a playback preference; the second needs the applicable microphone route and receiving-device checks.
Use the documented guide control
The publisher’s help places the lead-vocal toggle at the lower right of the playing karaoke video. It describes enabling assistance or switching it off. This is the documented control for that recorded element, not a universal mixer for every microphone or speaker.
Make one deliberate change and keep the rest of the setup steady. That makes it easier to tell whether the guide voice changed without confusing the result with another person adjusting the television volume. Do not infer unsupported pitch or key-changing features from a simple vocal toggle.
Keep live-mic support platform specific
If your own voice is absent, identify the actual platform and microphone type. Samsung’s Australian integration, for example, has current account, network and model requirements that are separate from the guide-vocal setting. A passive karaoke channel may have a different interaction model from the TV app.
For support, state which sound is present, which is missing, the receiving device and the selected control. This guide explains the publisher’s recorded-vocal feature and the conceptual distinction from live input. It includes no microphone connection, mixing, pitch-processing or singing test and does not certify a third-party audio setup.
Questions about this guide
Does the guide-vocal toggle connect a microphone?
No. The publisher describes it as recorded singing assistance.
Should an absent live voice be reported as a missing guide singer?
No. Identify the live-input route separately.