Distorted External Sound
Within settings, check to make sure the balance of the speakers is even. The Left audio should be about the same setting as the Right audio. If this doesn't work, the speakers may need to be replaced. Follow this guide.
No Sound From the Speakers
Check that the volume is not too quiet or even muted in settings. It is possible that if you are in a specific application, it has specific sound settings as well. To check this, open another app, such as the music application and see if there is sound when the music is playing. If there continues to be no sound, the speakers may need to be replaced. Follow this guide.
Source: [[Axess TA2513-10WT Troubleshooting]]