* Incorrectly Connected Cables: Ensure that the audio cable is properly connected from the DVD player to the TV. Check that the cables are firmly plugged into the appropriate audio input jacks on both devices.
* Wrong Input Selection: Make sure the TV is set to the correct input source. On the TV, switch to the input source that corresponds to the input port where the DVD player is connected. Usually, this involves pressing the 'Input', 'Source' or 'TV/Video' button on your TV remote.
* Audio Settings: Check the audio settings on both the TV and the DVD player. Ensure that the audio output on the DVD player is set to connect to an external device like the TV. Also, make sure the TV is not muted and the volume is turned up.
* Faulty Cables: If the cables are old or damaged, they may not be able to transmit audio signals properly. Try replacing the audio cable with a new one to rule out this possibility.
* Device Settings: Check the settings of both the TV and DVD player to ensure they are set to output and receive audio signals correctly.
* TV Speakers Disabled: Some TV speakers may need to be enabled or selected in the TV's settings. Make sure that the internal TV speakers are selected or enabled as the audio output device.
If you have tried these suggestions and the problem persists, it may be due to a technical issue with the DVD player, the TV, or the audio cable itself. In such cases, it is best to seek assistance from a professional or contact the customer support of Apex TV and DVD for further troubleshooting.