Why a Marantz Receiver Can Show Video but No Sound Through HDMI
If your Marantz receiver no sound through HDMI issue is leaving you with picture but no audio, the problem is usually in the signal path, not the speakers.
HDMI carries both audio and video, but a small setting mismatch, wrong input assignment, or handshake failure can stop sound from reaching the receiver.
This guide explains the most common causes, the fastest checks, and the deeper settings that affect HDMI audio on Marantz AV receivers and AV preamps.
Start with the simplest HDMI audio checks
Before changing advanced settings, confirm that the basics are correct.
Many HDMI audio problems come from a single loose cable, the wrong input, or a source device sending audio to the TV instead of the receiver.
- Confirm the HDMI cable is firmly seated at both ends.
- Try a different HDMI port on the Marantz receiver.
- Use a certified High Speed or Ultra High Speed HDMI cable.
- Test another source device such as a Blu-ray player, game console, or streaming box.
- Make sure the TV is not set to pass sound through its own speakers only.
Check whether the issue affects all sources
If one device has no sound but others work, the problem is likely in that source device’s audio output settings.
If every HDMI source is silent, the receiver configuration or HDMI handshake is a more likely cause.
Verify the Marantz input assignment settings
Marantz receivers let you assign HDMI inputs manually.
If the input is mapped incorrectly, the receiver may show the video signal while failing to decode the expected audio path.
In the setup menu, look for input assignment or source rename options and confirm that the correct HDMI jack is assigned to the selected source.
On some models, a source may be tied to optical or coaxial audio instead of HDMI if the assignment was changed during setup.
Common input assignment mistakes
- The source is labeled correctly, but the HDMI input is assigned to a different port.
- Audio is set to a digital optical input while the source is connected through HDMI.
- The source was copied from another input preset with the wrong audio mapping.
Confirm the audio output mode on the source device
Many HDMI audio failures originate in the source device, especially streaming devices, game consoles, and media players.
These devices can output audio in formats that a receiver may not handle if passthrough or bitstream settings are wrong.
For best results, set the source to output PCM, Dolby Digital, or Bitstream depending on the content and your Marantz model.
If you are troubleshooting, PCM is often the easiest option because it simplifies decoding.
Settings to check on common devices
- PlayStation and Xbox: set HDMI audio output and disable unusual surround modes during testing.
- Apple TV and Roku: confirm the audio format is compatible with the receiver and TV chain.
- Blu-ray players: enable bitstream only if the receiver is expected to decode Dolby TrueHD or DTS-HD Master Audio.
- PC or laptop: make sure the HDMI output is selected as the active playback device.
Look at the Marantz audio processing mode
Marantz receivers offer several listening modes, and the wrong one can make it seem like HDMI audio is missing.
For example, a stereo source routed through a surround mode may not behave as expected if the receiver is forced into a specific decoder.
Use the receiver’s information display or on-screen menu to verify the incoming signal format.
If the display shows video but no audio format, the receiver may not be receiving audio from HDMI at all.
Try switching the listening mode to Auto, Direct, or Pure Direct if supported.
Then compare the result with a standard surround mode such as Dolby Audio or DTS Neural:X.
Check HDMI ARC and eARC settings carefully
If the sound problem occurs when audio is supposed to come from the TV back to the receiver, the issue may involve HDMI ARC or eARC rather than the main source input.
ARC and eARC depend on compatible HDMI ports, enabled control settings, and the right output format on the TV.
On the Marantz receiver and TV, confirm that HDMI Control is enabled if required for ARC.
Then make sure ARC or eARC is active on the correct HDMI port, usually labeled ARC or eARC on the TV and monitor output on the receiver.
ARC and eARC troubleshooting tips
- Power cycle both the TV and receiver after changing ARC settings.
- Use the TV’s internal menu to confirm sound is routed to external speakers.
- Set the TV audio output to PCM or Auto during testing.
- Disable and re-enable HDMI Control if the handshake seems stuck.
Rule out HDMI handshake and CEC conflicts
HDMI uses a handshake process so devices can identify each other and agree on supported formats.
If that handshake fails, you may get video without audio, especially after a power outage, firmware update, or device swap.
Consumer Electronics Control, or HDMI-CEC, can also cause conflicts because it tries to manage power, input switching, and audio routing across devices.
On Marantz receivers, this feature may be labeled HDMI Control.
If sound disappears after a source or TV turns on, test with HDMI Control disabled on all devices.
Then restart the entire chain in this order: TV, receiver, source device.
This often clears a stuck handshake.
Inspect advanced format compatibility
Some HDMI audio formats require more bandwidth or decoding support than others.
A Marantz receiver may support Dolby Atmos, DTS:X, Dolby TrueHD, and multichannel PCM, but the source, cable, and TV all need to cooperate.
If the receiver works with one device but not another, compare the audio format being sent.
A source set to output 7.1 PCM, for example, may behave differently from a source sending Dolby Digital Plus.
Older HDMI hardware or firmware may also limit what passes reliably.
- Test with stereo PCM first.
- Then try Dolby Digital or standard multichannel PCM.
- Use the receiver’s on-screen signal information if available.
- Update firmware on the Marantz receiver, TV, and source device.
Test the cable path and port health
A damaged HDMI port or marginal cable can pass video while failing under the bandwidth demands of audio formats, especially when ARC or eARC is involved.
This is common with older cables, long cable runs, or ports that have been plugged and unplugged frequently.
Swap in a short known-good HDMI cable and connect the source directly to the receiver.
If sound returns, the original cable or an intermediate device such as a soundbar, splitter, or switch may be the problem.
Also check whether the receiver’s HDMI board behaves differently on specific inputs.
A single faulty HDMI input can make one source silent while other ports work normally.
Use the receiver’s setup menu to reset only what is necessary
If you have changed multiple settings and still have no HDMI sound, a targeted reset is often better than a full factory reset.
Re-check input assignment, HDMI Control, audio input format, and speaker configuration before wiping the entire setup.
If a full reset becomes necessary, note your speaker levels, crossover points, subwoofer settings, network configuration, and input names first.
Many Marantz owners lose time by resetting the receiver and then rebuilding every detail from memory.
When the problem is likely hardware-related
If every source fails, different cables have been tested, ARC and eARC are ruled out, and the receiver still shows video with no HDMI audio, the issue may be hardware-related.
Possible faults include a damaged HDMI input board, a failing HDMI transceiver, or internal audio processing failure.
Hardware symptoms often include intermittent sound, audio dropping after warm-up, or one HDMI port failing while others remain active.
In that case, warranty service or authorized Marantz repair is the next practical step.
Fast troubleshooting checklist for Marantz HDMI audio problems
- Test a different source device.
- Use a different HDMI cable.
- Confirm the correct HDMI input assignment.
- Set the source audio to PCM for testing.
- Check HDMI Control, ARC, and eARC settings.
- Restart TV, receiver, and source in sequence.
- Update firmware on all connected devices.
- Inspect whether the problem is on one input or all inputs.
What to verify before calling for service
Before sending the unit in, collect the receiver model number, TV model, source device model, cable type, and the exact symptoms.
Note whether video still appears, whether the issue affects ARC/eARC or only direct HDMI sources, and whether the receiver’s front panel or on-screen display shows any detected audio format.
That information helps narrow down whether the Marantz receiver no sound through HDMI issue is caused by configuration, compatibility, or failing hardware.
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