AGPtek A21 - No Sound from Headphones

10
computer.
- If the player has not been used for a long period of
time, charge the player for about 10 minutes, after
which it should start operating normally again.
 Can’t hear sound from headphones.
- Make sure that the headphone plug is firmly seated
in the headphone jack of the player.
- Please check if the volume is set to 0
- Test the headphones with another working device.
Specifications
Screen
1.5" TFT screen
Screen material
Plastic acrylic
Shell material
Zinc alloy
Weight
62g
Dimension
45*45*14mm
Flash memory
No memory
Audio format
MP3/WAV/APE/WMA/FLAC etc.
Recording
Format
MP3:
32 kbps/64 kbps/128 kbps/192kbps
PCM:
512kbps/768kbps/1024kbps/1536k
bps
Battery
300 mAh
Charging time
1.5-2 hours
SD card expansion
Up to 128GB
Lyric Format
LRC