Applies to: TV and receiver/soundbar with documented ARC/eARC, plus a supported source connected directly to the audio system.
The useful distinctions
- Sony treats ARC/eARC as a TV-to-audio-system connection.
- Both endpoints must support the return-audio feature.
- Diagnostic inference to test: A source connected to the receiver can exercise a different route from TV-originated audio.
Give each route its own name
Write “source into receiver” and “TV into return-audio input” as separate rows. This simple distinction prevents a common reasoning error: assuming that audible speakers prove every upstream path works. The speaker and amplifier section may be shared, while the input, format and TV output stages differ. Preserve those differences rather than reducing the result to soundbar works or fails.
Compare availability before quality
First establish whether each known audible reference reaches the speakers. Use comfortable volume and record which receiver input is active. Different material can vary in loudness, so avoid using loudness alone to judge route health. Once availability is understood, a known common format can support a narrower comparison if both devices document it.
Use the shared components wisely
When direct-source audio works and TV-return audio does not, investigate the return route’s ports, activation and supported format. Shared speaker operation makes a universal speaker failure less plausible, but it does not prove all receiver inputs are healthy. If both routes fail, keep the wider result and check the common output destination before repeatedly reconfiguring the TV.
A focused way to proceed
- Sketch the direct-source route and TV-return route separately.
- Play a known audible passage from the receiver-connected source.
- Compare a lawful TV-originated reference on the return-audio input.
- Record sound availability and receiver input for each route.
- Keep physical connections fixed while repeating the two observations.
Worked example · synthetic
Hypothetical example: a receiver-connected disc reference plays through the speakers, while a TV-originated reference remains silent on the return-audio input. The next check covers the return link and settings rather than replacing already-audible speakers.
When to stop or ask for help
The references may use different formats. This comparison establishes route scope and does not certify ARC/eARC activation or full format support.