Sony MHC-3300CD Hifi Mini Component System

The two most common connections used to hear TV sound from the A/V receiver or home theater system speakers are:
Option 1: HDMI® connection using the ARC feature
Option 2: Connection using an HDMI cable, Coaxial Digital, Optical Digital, or Audio cable
Which option you use will depend on the connection ports on your products. If your TV and audio system both support the ARC feature, we recommend using Option 1 to connect your products, otherwise use Option 2.

Make sure to turn up the volume level on the computer.
Place your device within one meter (three feet) of the computer.
Make sure your computer supports the Advanced Audio Distribution Profile (A2DP) Bluetooth profile.
The drivers needed to connect your device to a computer are already included in the operating system.
If your computer is asking for a Bluetooth driver, contact your computer manufacturer.
If you're using a VAIO® computer, Bluetooth drivers are available online. Downloads are posted on your model support page.

- Pulse-Code Modulation (PCM) and the Dolby Digital® technology refer to different types of digital audio recordings. PCM is the conventional method for converting analog audio into digital audio. The PCM audio recorded on DVD is a two-channel digital, stereo audio track.
- The Dolby Digital® technology, which was originally called AC3, was developed specifically for multi-channel applications, including film sound and digital surround sound in the home. Dolby Digital® technology uses a 5.1 or six channel format. The 5 channels include the Stereo left and right front channels, Stereo left and right surround channels, and the center channel. There is also, a Low Frequency Effects (LFE) channel for the subwoofer, which is counted as the 0.1 channel since it functions only when a deep base effect is needed.

- If you are connecting a computer to the audio system follow this general information about connecting an A/V component to a computer .
- If the sound issues are occurring when using a Bluetooth wireless device, refer to this additional information.
If the sound issues are only occurring when using the audio device with a TV, refer to this additional information.
Make sure that the software version of the product is updated.
Because each of these steps represents a possible solution to this issue, check the sound status after completing each step.
Make sure the MUTE function has not been activated.
Try turning up the volume level.
Check that there are no headphones connected.
Check if the issue also occurs to other device connected to the TV. You may try to changing the TV channel or play back a movie on a DVD player.
Try different cables to verify this is not a bad set of cables.
Try setting the Audio/Video (A/V) receiver to a different Surround Sound mode.