What are the reasons for the sudden loss of sound when playing music in the Regal?

[McBrooklyn]

Reasons for the sudden loss of sound when playing music in the Regal: Accidental mute setting: The audio system may have been accidentally set to mute, which typically results in no sound from the multimedia system. CD player power issue: If the CD player's power is abnormal, the indicator light should be on when powered, and the CD compartment should open and close normally. Power supply failure: If there is no power, check the power supply, including the fuse box and wiring. Modified audio system: The audio system may have been modified, causing the multimedia system to malfunction and produce no sound. Disconnected output wire: The audio output wire may have come loose, though it is generally unlikely that all speakers would fail simultaneously.