Audio issues—no sound, random dropouts, or voices out of sync with the picture—are some of the most common home theater complaints. The good news is that most problems are caused by a handful of settings or connection quirks, not hardware failure.
Quick answer
- Check volume and mute on TV, receiver, and source device
- Reseat HDMI or optical cables to fix loose connections
- Match audio formats by setting source to Dolby Digital or "Auto"
- Power-cycle the full chain in order: TV → receiver → source
- Adjust audio delay for lip-sync issues (start with 10-30 ms)
Symptoms
- Complete silence from speakers despite volume being up
- Random audio dropouts or intermittent sound cutting out
- Dialogue appears before or after lip movement on screen
- Crackling, clicks, or distorted audio from all speakers
- Sound works on some inputs but not others
Quick checks
- Confirm volume and mute on every device — Check the TV, receiver, and source device. A mute icon or very low volume on any one of them can make it seem like something is broken.
- Verify the active input — Make sure the receiver is actually set to the HDMI or digital input your source is using.
- Inspect speaker wiring — For receivers and amps, confirm that bare speaker wire strands are not shorting between terminals.
Step-by-step fix
-
Reseat HDMI or optical cables
Loose connections cause intermittent sound and clicks. Unplug and firmly reconnect each end. -
Match audio formats
If you get silence or weird behavior, try setting the source to Dolby Digital or "Auto" instead of multichannel PCM or high-bitrate formats. -
Bypass enhancements temporarily
Disable virtual surround, dialogue enhancers, or night modes while you troubleshoot. Some modes react badly to certain formats. -
Power-cycle the full chain
Turn off the TV, receiver, and source. Unplug them for 30 seconds, then power them back on in order: TV → receiver → source. -
Fix lip-sync issues
Use the audio delay setting on your receiver. Most have a lip-sync or delay option under Settings → Audio → Delay. Start with small changes (10-30 ms) while watching live content. -
Turn off heavy video processing
If the TV is doing motion smoothing or noise reduction, it can delay the picture. Switch to Game or PC mode to reduce processing delays. -
Test with stereo source
Set the source to stereo PCM and use a simple two-channel test clip. If that works perfectly, gradually re-enable surround formats and processing until problems reappear.
If it still isn't working
If sound cuts out on every input, or you hear distortion even at low volumes with different speakers and sources, hardware may be failing. Reset the receiver to factory defaults and re-run any auto-calibration routine. Repeat your basic tests with the fresh settings.
Avoid double-processing — When both the TV and receiver apply processing, delays can add up. Try disabling processing on one device.
If problems persist across all inputs and sources after a factory reset, contact support with details about which inputs, formats, and speakers are affected.
FAQ
Why does dialogue appear out of sync with the picture?
Video processing on your TV can delay the picture while audio passes through unchanged. Add 10-40 ms of audio delay on your receiver or switch the TV to Game mode.
What if I only get sound from some speakers?
Check that the source audio format matches your speaker setup. A 5.1 source won't play center channel dialogue if your receiver thinks you have a 2.1 system.
Should I use PCM or Dolby Digital?
Start with "Auto" or Dolby Digital. PCM can cause compatibility issues with some receiver and TV combinations, especially for multichannel content.
Why does unplugging everything actually help?
HDMI devices sometimes get stuck in incompatible handshake states. A full power cycle forces them to renegotiate audio formats and connection protocols from scratch.