If the image is going in and out, the problem might be a software issue that can be solved by simply resetting the device. If this does not help, make sure that your software is up-to-date. Your camera may also have damage from being dropped on a hard surface or exposed to water. In this case, please see a troubleshooting page for camera replacement at Le Pan S Troubleshooting.
Since you have already verified that you have checked your volume and different forms of speakers, your issue is most likely due to out-of-date software. This can cause your device to have audio issues. If this still does not fix the issue, it could be the rare case of both your internal speakers and audio jacks being broken. This can be caused by playing loud audio constantly. Please see a troubleshooting page located at Le Pan S Troubleshooting for help with replacing these components.
Try plugging the charger into multiple outlets to make sure the issue does not reside within the electricity being supplied to the outlet. If you have no luck, consider using a friend’s charger or purchasing a new charger to charge your device. If the issue persists, the problem you are experiencing is most likely due to internal components such as a battery. Please see a troubleshooting page located at Le Pan S Troubleshooting.