HDMI ARC or eARC Not Working? What to Check First

HDMI ARC or eARC can stop working even when the television, soundbar or receiver is not faulty. The cause is often the wrong HDMI port, an incorrect sound-output setting, HDMI-CEC being disabled, a cable problem, an unsupported audio format or a failed HDMI handshake between connected devices.

Before buying a new television, soundbar, receiver or expensive HDMI cable, work through the following checks in order. Change one thing at a time so you know what restores the connection.

Before you begin

Do not remove the cover from a television, soundbar or receiver. Internal components can retain dangerous voltages even after the equipment has been unplugged.

Disconnect the equipment from power and arrange professional assistance if you notice:

A burning smell, smoke or unusual heat.
Crackling, popping or electrical noises.
Liquid damage.
A damaged power cable, plug or HDMI socket.
Visible scorching or damage caused by an electrical event.

Do not force an HDMI plug into a damaged, loose or obstructed socket.

What ARC and eARC actually do

ARC stands for Audio Return Channel. It allows a compatible television to send sound back to a soundbar or receiver through a designated HDMI connection. This means the same general type of cable used for HDMI video can also carry television audio in the return direction.

eARC stands for Enhanced Audio Return Channel. It can carry additional high-bandwidth and uncompressed audio formats when the television, audio system, cable, source and settings all support them.

ARC and eARC are not separate plug shapes. They use HDMI sockets, but the correct sockets must be labelled for ARC or eARC/ARC.

ARC and eARC are not the same as an ordinary HDMI input

A television may have three or four HDMI inputs but support ARC or eARC on only one of them. Look for a label such as:

HDMI ARC.
HDMI eARC.
HDMI eARC/ARC.

On the soundbar or receiver, the correct socket is commonly labelled:

HDMI OUT (TV ARC).
HDMI OUT (TV eARC/ARC).
TV eARC/ARC.
Monitor Out (ARC/eARC).

Do not connect the television to a soundbar socket labelled only HDMI IN. That socket is normally intended for a game console, streaming device, Blu-ray player or other source.

Confirm that both products support the required feature

Check the exact model numbers rather than relying on the age or appearance of the equipment.

If both products support eARC, use their eARC/ARC sockets and enable the required eARC settings.
If one product supports only ARC, the connection may fall back to ARC, but eARC-only audio capabilities will not be available.
If either product has no ARC or eARC connection, use a supported alternative such as optical digital audio.

A soundbar advertising Dolby Atmos does not automatically mean that every television can send every Atmos format to it. Check the supported audio formats and pass-through capabilities of the exact television and soundbar models.

Start with the quickest checks

Turn on the television and soundbar or receiver.
Cancel mute on both products.
Increase the soundbar or receiver volume gradually.
Select the soundbar input labelled TV, TV ARC, eARC, HDMI, D.IN or the model-specific equivalent.
Open the television's sound-output menu and select the external audio system.
Play a built-in television application or free-to-air channel.

If sound returns, test several applications and external devices before changing any further settings.

Select the external audio system on the television

Connecting the HDMI cable does not always make the television change from its own speakers automatically.

Open the television's sound settings and look for an option such as:

Sound Output.
Speakers.
Audio Output.
Receiver.
Audio System.
Soundbar (HDMI).
HDMI ARC or HDMI eARC.
External Speaker.

Select the soundbar, receiver or audio-system option. If the television immediately changes back to its internal speakers, continue with the HDMI-CEC, cable and power-restart checks below.

Select the correct input on the soundbar or receiver

A soundbar can be powered on but listening to Bluetooth, optical or an ordinary HDMI input.

Use the soundbar's Source, Input or Function control to select the television audio connection. Depending on the model, the display may show:

TV.
TV ARC.
TV eARC.
HDMI ARC.
D.IN.
Audio Return Channel.

On some Samsung soundbars, selecting D.IN changes automatically to TV ARC or TV eARC after the connection is recognised. Other brands use different labels.

Check the HDMI connection at both ends

Turn off the television and audio system.
Confirm that the television end uses the socket labelled ARC or eARC/ARC.
Confirm that the audio-system end uses its HDMI output labelled TV ARC or eARC/ARC.
Remove and firmly reconnect the HDMI cable at both ends.
Check that the plugs are fully inserted and not sitting at an angle.
Check the cable and sockets for visible damage.
Turn on the television and audio system, then reselect the correct output and input.

If the television is wall-mounted, make sure the cable is not being pulled sideways, crushed behind the screen or bent sharply at the connector.

Enable HDMI-CEC on both products

HDMI-CEC allows compatible HDMI devices to exchange control information. ARC commonly depends on this feature being enabled.

Manufacturers use different names for HDMI-CEC, including:

Samsung: Anynet+.
Sony: BRAVIA Sync or Control for HDMI.
LG: Simplink.
Panasonic: VIERA Link.
Other brands: HDMI Control, CEC or HDMI-CEC.

Enable HDMI-CEC on the television and soundbar or receiver. Some soundbars call the setting Control for HDMI, HDMI Control, CEC, ARC or TV Audio Input Mode.

After changing HDMI-CEC, turn both products off and restart them. The ARC connection may not be rebuilt until the devices complete a new HDMI handshake.

Enable ARC or eARC in the audio system

Some soundbars and receivers include a separate ARC or television-audio setting. Look for:

ARC.
eARC.
TV Audio Input Mode.
Audio Return Channel.
HDMI Control.
Control for HDMI.

Set the relevant function to On or Auto as directed by the manufacturer's instructions. Menu names and requirements vary considerably between models.

Check the television's eARC setting

If both products support eARC, set the television's eARC mode to Auto or the setting recommended for the model.

If the soundbar supports ARC but not eARC:

Check whether the television automatically falls back to ARC.
Temporarily turn eARC off and test ordinary ARC.
Keep HDMI-CEC enabled.
Restart both products after changing the setting.

If ordinary ARC works while eARC does not, check the audio system's eARC support, cable requirements, television software and model-specific eARC instructions before replacing anything.

Perform a complete HDMI handshake restart

Simply placing the television in standby may not clear a failed HDMI connection.

Turn off the television, soundbar or receiver and all connected HDMI source devices.
Disconnect their power cables.
Disconnect the HDMI cable between the television and audio system.
Wait approximately two minutes.
Reconnect the HDMI cable to the correct ARC or eARC/ARC sockets.
Reconnect and start the television.
Reconnect and start the soundbar or receiver.
Reconnect and start the source devices.
Select the external audio output on the television and the television input on the audio system.

If a manufacturer specifies a different restart order for your model, follow that guidance.

Temporarily disconnect other HDMI devices

A set-top box, streaming device, console, HDMI switch, splitter or other connected product can sometimes interfere with HDMI-CEC or the ARC handshake.

Turn off the equipment.
Disconnect every HDMI device from the television except the ARC or eARC audio system.
Restart the television and audio system.
Test a built-in television application.

If ARC or eARC starts working, reconnect the other HDMI devices one at a time. Restart and test after each connection until the interfering device or cable is identified.

Samsung specifically advises removing external devices when diagnosing an eARC connection problem because some devices may not comply properly with HDMI connection requirements.

Test another HDMI cable

An HDMI cable can carry normal video in one situation but still cause an unreliable ARC, eARC, HDMI-CEC or high-bandwidth audio connection.

Before buying an expensive cable:

Test the cable supplied with the soundbar if the manufacturer recommends it.
Test a short, known-working cable that meets the equipment manufacturer's requirements.
For eARC, use an eARC-compatible HDMI cable with Ethernet support as specified by the manufacturer.
For 4K at 120 Hz, 8K or other high-bandwidth video passing through an audio system, check whether an Ultra High Speed HDMI cable is required for that complete video path.
Avoid unverified adapters, wall plates, extenders, switches and joins while testing.

A higher price does not automatically make a cable compatible. Look for the correct certification and specification rather than marketing claims.

Test PCM to identify an audio-format problem

If ARC or eARC appears connected but produces no sound, the television may be sending a format that the audio system cannot decode.

Record the original digital-audio-output setting, then test PCM.

If PCM restores sound, the HDMI connection is operating but the previous audio format may not be supported across the complete signal path.
If Auto works but Pass Through does not, the television may need to decode or convert the audio.
If only certain applications or programs are silent, they may use a different audio format.

PCM can reduce the number of surround channels available in some configurations. Use it as a diagnostic test, then confirm the best final setting supported by the television and audio system.

Test Auto and Pass Through carefully

Televisions may offer digital-audio settings such as Auto, Pass Through, Bitstream, PCM, Dolby Digital or Dolby Digital Plus.

Change only one setting at a time and test the same content after each change.

Auto: the television selects or converts the output format.
Pass Through: the television attempts to pass the incoming audio to the soundbar or receiver with less conversion.
PCM: a useful compatibility test when compressed or surround formats produce silence.

The best final setting depends on the source, television, audio system and connection. Do not assume that Pass Through is always required or that PCM is always the best permanent setting.

If ARC works but Dolby Atmos does not

Working television sound does not prove that every Dolby Atmos format is supported.

Check all of the following:

The program actually provides a Dolby Atmos audio track.
Your streaming subscription includes the required audio quality.
The application and playback device support Atmos.
The television can pass the program's audio format through the selected input.
The soundbar or receiver supports that exact format.
The television's eARC mode and digital-audio output are configured correctly.
The HDMI cable meets the manufacturer's requirements.

Some streaming services deliver Atmos using Dolby Digital Plus, which may work through compatible ARC equipment. Higher-bandwidth formats such as Dolby TrueHD-based Atmos generally require a compatible eARC path or a source connected directly to a compatible audio system.

Check the soundbar or receiver's information display to see the format it is actually receiving.

If DTS or another format is missing

A television may support eARC but not pass every DTS, Dolby or multichannel PCM format from every input or application.

If one format is missing while ordinary television sound works:

Check the television's supported pass-through formats.
Check the soundbar or receiver's supported formats.
Test Auto, Pass Through and PCM as appropriate.
Connect the source device directly to a compatible HDMI input on the soundbar or receiver for comparison.

Samsung notes that DTS support and eARC pass-through vary between selected televisions. This is a compatibility issue, not proof that the soundbar is faulty.

Test built-in applications separately from HDMI devices

Play sound from:

A free-to-air television channel.
A built-in streaming application.
A console or streaming device connected to the television.
A source connected directly to the soundbar or receiver, if supported.

The pattern helps identify where the problem occurs:

If built-in applications work but one HDMI device does not, check that device's audio settings and the television's input-format support.
If external devices work but built-in applications do not, check the television's application, audio-track and digital-output settings.
If only a source connected directly to the audio system works, concentrate on the television's ARC/eARC output path.
If nothing works through the audio system, test another audio input before assuming the HDMI section has failed.

Connect the source directly to the soundbar or receiver

If the audio system has a suitable HDMI input, connect the affected console, Blu-ray player or streaming device directly to it for comparison.

If the full audio format works through the audio system's HDMI input but not when the source passes through the television, the television's supported pass-through formats or settings may be the limitation.

Confirm that the audio system can pass the required video format to the television. Older receivers and soundbars may not pass 4K at 120 Hz, variable refresh rate, HDR formats or other modern video features even when their audio performance is adequate.

Check whether an HDMI switch, wall plate or extender is involved

ARC, eARC and HDMI-CEC can be interrupted by equipment placed between the television and audio system.

Temporarily bypass:

HDMI switches.
Splitters.
Audio extractors.
Converters.
Wall plates and joiners.
Long passive cable runs.
Wireless HDMI systems.

Connect the television directly to the soundbar or receiver with one known-working cable. If the connection works, investigate the bypassed component before replacing the main equipment.

Check for software and firmware updates

Install available updates for:

The television.
The soundbar or receiver.
The streaming device.
The game console.
The set-top box.
The affected application.

Keep each product connected to power while its update is being installed. Do not turn it off unless the manufacturer's instructions tell you to do so.

After updating, restart the television and audio system and confirm that HDMI-CEC, ARC or eARC and the intended sound output remain enabled.

Reset the sound settings before factory-resetting everything

If ARC or eARC stopped after settings were changed, reset the television's sound settings and reselect the external audio system.

A sound reset may restore settings involving:

Speaker selection.
Digital-audio output.
eARC mode.
Audio delay.
Sound processing.

The soundbar or receiver may also have a separate HDMI-control or settings reset. Use only the instructions for the exact model.

Do not factory-reset the television too early

A complete factory reset can remove:

Application sign-ins.
Wi-Fi settings.
Tuned television channels.
Accessibility settings.
Picture and sound adjustments.
Connected-device settings.

Use a complete reset only after checking the correct ports, sound output, soundbar input, HDMI-CEC, ARC or eARC settings, cable, audio format, other HDMI devices and software updates.

Record important settings and make sure you know your Wi-Fi password and application login details first.

Use optical audio as a diagnostic test

If both products support optical digital audio, a temporary optical connection can help identify whether the soundbar itself still works.

If optical audio works normally, the soundbar's amplifier and speakers are operating. Concentrate on the HDMI ports, ARC/eARC settings, HDMI-CEC and cable.
If optical and HDMI are both silent, test Bluetooth or another supported input.
If the soundbar remains silent from every input, a soundbar fault becomes more likely.

Optical audio does not support every format or control feature available through eARC. Treat it as a useful test or fallback, not necessarily an identical replacement.

When buying a new HDMI cable may make sense

A replacement cable is reasonable when:

The existing cable is visibly damaged or fits loosely.
A short known-working cable restores ARC or eARC.
The existing cable does not meet the manufacturer's eARC requirements.
The connection fails only with high-bandwidth audio or video formats.
The cable run is unusually long or passes through adapters and wall plates.

Do not buy a premium-priced cable merely because the packaging promises better sound. Digital compatibility, certification, required bandwidth and reliable construction matter more than extravagant marketing.

When new equipment may actually be required

New equipment may be justified when a required feature is genuinely absent, for example:

The television has ARC but you require eARC-only audio formats.
The soundbar cannot decode the audio formats you intend to use.
The receiver cannot pass the video features required by a new console or television.
The television cannot pass the required format from external HDMI sources.
A port has been confirmed faulty after testing correct settings, cables and other devices.

Compare the exact missing capability with the specifications of potential replacements. Do not replace a working television and soundbar just because one menu option is incorrectly configured.

Signs that a port or device may require professional assessment

Contact the manufacturer, retailer or a qualified technician when:

The ARC or eARC socket is visibly loose, bent or damaged.
No HDMI device is detected through a particular television input.
The audio system works through optical or Bluetooth but never through its ARC/eARC port with more than one compatible television and cable.
The television works with other audio systems but not the affected unit after a model-specific reset.
The connection repeatedly drops after known-working cables and other HDMI devices have been ruled out.
HDMI-CEC or eARC settings will not remain saved.
The television, soundbar or receiver restarts, freezes or overheats.
There is distortion, electrical noise, a burning smell or visible damage.

Do not pay for a repair or replacement before checking the purchase date, manufacturer warranty, retailer support and applicable Australian consumer guarantees.

What to record before contacting support

The television's brand and exact model number.
The soundbar or receiver's brand and exact model number.
Which HDMI sockets are being used at both ends.
The HDMI cable type and approximate length.
Whether ARC, eARC or neither appears on the audio-system display.
The selected television sound output.
The selected soundbar or receiver input.
Whether HDMI-CEC is enabled on both products.
The selected eARC and digital-audio-output settings.
Whether PCM, Auto and Pass Through were tested.
Whether built-in applications and external HDMI devices behave differently.
Whether optical or Bluetooth audio works.
Whether other HDMI devices were disconnected.
Whether another cable was tested.
Whether the equipment was restarted and updated.

Photograph the port labels and cable arrangement. This can help support staff identify a cable connected to an ordinary HDMI input rather than the required ARC or eARC socket.

The bottom line

HDMI ARC or eARC problems are commonly caused by the wrong ports, the wrong television sound output, the wrong soundbar input, disabled HDMI-CEC, a failed HDMI handshake, an unsuitable cable or an unsupported audio format.

First connect the television's ARC or eARC/ARC socket to the audio system's HDMI output marked TV ARC or eARC. Select the external audio system on the television, select the TV input on the soundbar or receiver and enable HDMI-CEC on both products.

If there is still no sound, perform a complete power restart, disconnect other HDMI devices, test a known-working cable and select PCM as a diagnostic test. If ARC works but a particular surround format does not, check the full compatibility chain before replacing equipment.

Buy new equipment only when you have confirmed that a required feature is unsupported or a port or device is genuinely faulty.

Useful official resources

Information and Australian manufacturer support references checked 12 August 2026. Port labels, menu names, supported audio formats and reset procedures vary between television, soundbar and receiver models. Follow the instructions supplied for your exact equipment.

HDMI ARC or eARC Not Working: What to Check Before Buying New Equipment