TV Has Picture but No Sound? Fix Audio Output, ARC/eARC and Speakers
The TV may be sending sound to an external or Bluetooth device. Check volume and the selected output, then test another source before resetting settings.
The TV may be sending sound to an external or Bluetooth device. Check volume and the selected output, then test another source before resetting settings.
First separate internal TV-speaker silence from soundbar silence, and every-source silence from one app or input. This distinction makes diagnosis substantially faster.
Check volume and mute
Raise volume on the TV and on any set-top box or external source. LG specifically notes that an external device can be muted or at zero even when the TV volume is high.
Switch to the TV speakers
Temporarily select TV Speaker/Internal Speaker. Samsung and LG identify wrong audio-output selection as a common cause after an external speaker has been disconnected.
Has the volume indicator changed?
On some LG televisions, a changed or unusual volume indicator can suggest that audio output is assigned to an external device. Do not treat its appearance as a universal rule across manufacturers. Use the model’s manual and the indicator together as a quick clue to where the television is sending sound.
Is it one source or everything?
Compare an internal app, another channel/content item and an HDMI source. A one-source problem belongs to that source; silence everywhere needs TV-wide diagnosis.
Run a sound test
Samsung offers Sound Test under Self Diagnosis and LG provides Sound Self-Diagnosis on supported models. If the test works, the TV can generate audio and the source/output path becomes the stronger suspect.
Restart before reset
Restart the TV and connected devices. Do not jump to factory reset for one audio incident; Google TV places factory reset after simpler troubleshooting because it erases device data.
HDMI source silence
Reseat the cable and compare a known-good HDMI port/cable if the problem affects one source. Check the external device audio setting as well.
ARC/eARC soundbar path
Sony states that both TV and audio system must support ARC/eARC and the cable must use the labeled ARC/eARC ports. The TV output and audio-system TV Audio/ARC setting must also match.
Power-reset ARC/eARC when appropriate
Sony recommends a structured power reset for ARC/eARC failures: power off, disconnect power and HDMI, reconnect the ARC/eARC ports, restore power, then turn on TV before the audio system.
Digital audio format
Auto, PCM and Pass Through can change compatibility. PCM can be a useful diagnostic when an audio system cannot decode the selected format, but it is not universally the best format.
Bluetooth/headphones
A selected Bluetooth audio device or headphones can keep TV speakers silent. Google TV supports one connected Bluetooth audio device at a time; check Remote & Accessories and disconnect or forget it when needed. Temporarily return to TV Speaker for comparison. If the TV has a physical headphone socket, also check whether it still detects a plugged-in headset.
No audio after changing input/channel
LG documents cases where audio output is set to another source or a set-top box has a temporary audio/program issue. Restart that source and test another channel/content item.
One app only
If every source has sound except one app, troubleshoot the app: restart, update, and if necessary use the app-specific cache/data/reinstall workflow.
No sound versus lip sync
Sound that exists but arrives early or late belongs in the lip-sync guide. TV audio that works but not through a soundbar belongs in the soundbar/ARC guide.
When to request service
If the built-in Sound Test is silent and all sources remain silent through the TV’s internal speakers after restart and an official update, contact manufacturer support. If there is strong interference, persistent internal crackling or a burning smell, stop using the equipment. Do not open the TV or sound system yourself; this guide does not cover internal circuits or speaker repairs.
Ten-minute workflow
- Unmute and raise volume
- select TV Speaker
- compare sources
- run Sound Test
- restart devices
- isolate HDMI
- check ARC/eARC and CEC
- try PCM only as a compatibility test
- disconnect Bluetooth/headphones
- update firmware and escalate if the sound test is still silent.
Conclusion
The key is to isolate the silent section of the signal chain. Once TV speakers, source, external audio and format are tested separately, most no-sound cases become much easier to identify.
Frequently Asked Questions
Why do I have picture but no sound?
Common causes include mute/volume, the wrong audio output, a silent source, HDMI/ARC issues, Bluetooth audio selection or a source-specific problem.
How do I test the TV speakers?
Select TV/Internal Speaker and run the built-in Sound Test if your model provides it.
Is PCM always the fix?
No. It is a compatibility test that can change the delivered audio format.
Why is my soundbar silent?
Check the ARC/eARC ports, TV audio output, CEC/HDMI control, audio-system TV input and the cable.
Can Bluetooth steal the TV audio?
Yes, if the TV is still outputting to a paired Bluetooth audio device. Headphones can also select a different output; temporarily disconnect the audio device and test TV Speaker.
When should I seek service?
When the built-in sound test and all sources remain silent through the TV speakers after basic software troubleshooting.