Operation

There is no sound.
Data cannot be played.
Songs cannot be deleted by the player.
Noise is generated.
The player does not respond to any button operations.
Playback does not stop.
It takes time to start up the player.
The transferred songs cannot be found.
There is insufficient volume.
There is no sound from the right channel of the headphones. Or the right channel sound is heard from both sides of the headphones.
Playback has stopped suddenly.
The player’s power turned off, and then on again.
The player does not work properly.
The player cannot be formatted.
The player does not work.