When a TV and receiver refuse to pass audio over eARC or ARC, the culprit is usually handshake order, port settings, or a cable that cannot handle the return channel. This guide keeps the steps focused and repeatable.
Quick fixes first
- Use the TV's labeled ARC/eARC HDMI port and the receiver's TV/eARC HDMI output only.
- Power-cycle in order: turn off TV and receiver, unplug for 30 seconds, reconnect HDMI firmly, then power TV first and receiver second.
- Replace the HDMI cable with a certified Ultra High Speed cable; eARC is sensitive to marginal cables.
- On the TV, toggle eARC/ARC off then on; on the receiver, set HDMI Control/CEC to On and ARC/eARC to Auto.
Advanced steps
- Set TV audio output to "Passthrough" or "Auto" instead of PCM; enable Dolby/DTS formats only after the link is stable.
- Disable audio processing modes on the receiver while testing (Dialogue Enhancer, Virtual Surround) to reduce renegotiations.
- Turn off third-party HDMI devices temporarily (consoles, streamers) and retest with a single HDMI connection to isolate the chain.
- Update firmware on both TV and receiver; eARC fixes are frequently patched.
When to suspect cabling or port issues
- TV shows eARC enabled but audio drops when switching apps-replace the cable first, then test another HDMI port if available.
- PCM works but Atmos or DD+ fails, pointing to bandwidth/handshake issues.
- If ARC works but eARC fails consistently, try a short cable run to remove length as a variable.
When to contact manufacturer support
- No audio even at PCM after multiple cables and ports.
- Receiver never detects an ARC link despite CEC on and correct ports.
- Audio cuts out every few minutes only on one device brand even with known-good cables.
See also
- Receiver HDMI fixes: /categories/receivers-amps
- TV-specific HDMI tips: /categories/tvs