1. Sound source problem: First, make sure whether the source of music is the official version of mango music. Sometimes the unofficial version of the sound source may be modified or edited, resulting in no original sound.
2. background sound setting problem: some TV audio settings may enable sound effect mode by default, such as surround sound effect or mixing mode, etc. These settings sometimes process the original singing sound, resulting in the inability to hear the complete original singing. You can try to adjust the sound mode in the TV menu and set it to the default or normal sound mode to see if it can solve the problem.
3. Audio cable contact problem: If you are using an external speaker or audio equipment, it may be caused by poor audio cable connection. You can try to reconnect the audio cable, or connect with a different audio cable to see if you can restore the original sound.
if the above methods have not solved the problem, it may be that the audio output or decoder of the TV set has failed, so it is recommended to contact the after-sales service of the TV set manufacturer for consultation or maintenance.