Start with the simple checks: confirm the television is not muted, raise the volume gradually, and make sure the correct input is selected. Test a different channel or streaming app to see whether the problem affects every source. If only one device is silent, check that device's volume and audio settings before changing the television.
Look at the audio output setting. A television may be set to send sound through a soundbar, receiver, headphones, or another output rather than its built-in speakers. If you use HDMI ARC or eARC, confirm that the compatible ports are connected and that audio return is enabled where required. Reseat cables and inspect connectors for visible damage.
Restart the television and connected audio equipment by following their normal shutdown instructions, then test again. Review recent changes, such as a new cable, software update, or altered sound format. If external speakers work but internal speakers do not, or the issue persists across all sources, consult the manufacturer's troubleshooting guidance before performing a factory reset. Write down customized settings first, since a reset may erase them.
Digging Deeper: Audio Formats, HDMI Control and Hidden Settings
When the basic checks do not restore sound, the cause is often a mismatch between what a source sends and what the television or audio system can play. Many streaming boxes, game consoles and Blu-ray players can output multichannel formats such as Dolby Digital, DTS or Dolby Atmos. If the television or a connected soundbar cannot decode the selected format, the result may be silence rather than an error message. Try switching the source's audio output to PCM or stereo. If sound returns, you can then work back towards a richer format that your setup actually supports.
Check HDMI device control
HDMI-CEC, sold under names such as Anynet+, Bravia Sync or SimpLink, lets devices control each other. It is convenient, but it can cause confusion. A soundbar may grab the audio and then fail to wake up, or the television may keep switching back to its own speakers. Turning CEC off and on again on both the television and the audio device often clears the handshake. Disabling it for a quick test shows whether it is part of the problem.
Look for less obvious settings
- Audio description or secondary audio: an accessibility track can replace or mute the main soundtrack on some channels.
- Bluetooth pairing: headphones or a speaker paired in another room may still be receiving the sound.
- Night or auto-volume modes: aggressive settings can make dialogue almost inaudible.
- Digital optical output: if it is active, check that the cable's protective cap was removed and that the light is visible at the tip.
Rule out the cable and port
HDMI cables can fail without visible damage, especially older ones used with eARC. Swap in a known-good cable and try a different HDMI input. Only ARC or eARC-labelled ports pass audio back to a soundbar. If you are planning an upgrade, our guide on what to look for in a soundbar explains connection options that reduce these problems.
When it may be hardware
Some televisions offer a built-in sound test in the support or diagnostics menu. If that test is silent while external audio works, the internal speakers or amplifier may be faulty. In that case, contact the manufacturer or an authorised repairer, particularly while the set is under warranty. Opening the casing yourself can void cover and expose you to hazardous components.