Follow the steps below to troubleshoot this issue.
IMPORTANT: This solution assumes that the receiver is able to produce audio using a different input source (tuner, etc.).
- Verify that the receiver is set to the same input that the digital coaxial cable from the CD or DVD player is connected.
- Verify that the digital coaxial cable is connected to the correct input on the rear of the receiver, not an output.
- Set the input mode on the receiver to Auto or Digital (Coaxial).