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Original topic:

HDMI/eARC connected to receiver issues

(Topic created on: 29-05-2022 10:13 AM)
First Poster

I have my Samsung ue43TU7 TV connected to a Yamaha Receiver over the HDMI/eARC port.

When I turn on the TV, it always switches the source input on my receiver; sometimes multiple times (after I have switched it back). Why does it do this & how do I get it to stop?



UnfortunateIy, I have a QN90B Samsung TV with the similar eArc issues using a Yamaha A6A receiver.  I believe the Samsung QN90B and A models TV's have a software and/or hardware critical defect with its eArc system.   The Samsung QN90B eArc problems started as soon as the Yamaha A6A was connected to the TV.  Performed extensive troubleshooting tasks over the span of 3 weeks with the help of experts from Yamaha's help line and they rightfully concluded that it was the Samsung QN90B TV having eArc communication issues with Yamaha A6A receiver.  Unfortunately the facts are now building that Samsung’s QN90B and A models TV’s do have a consistent and systemic defect in their eArc system that they need to fix as soon as possible. 


TV and AVR Configuration:

  • Only using Samsung QN90B TV apps such as Youtube-TV, Netflix, PrimeTV, Disney, Youtube.
  • eArc using 8K rated cable TV output to HDMI-3 to Yamaha A6A eArc input.


Summary of Problems with Samsung QN90A eArc with Yamaha A6A Receiver

  1. Audio randomly drops out when switching channels and/or changing volume.
  2. Significant audio delays when switching channels and/or apps.
  3. At times have total loss of audio when switching channels and/or apps.
  4. At times no audio upon TV startup.
  5. Random AVR source change at TV startup, and when changing channels and/or apps.

Summary of Troubleshooting Tasks:

  1. Switch to different HDMI cable at eArc connections, no improvements.
  2. Changed and adjusted numerous TV and AVR settings, no improvements.
  3. Bi-pass eArc with optical cable, all eARC related problems solved, but lower quality audio.
  4. Bi-pass eArc with Apple TV using HDMI interconnects, all eARC related problems solved, but had lower quality video using Yamaha’s 4K up-converter, Samsung internal 4K up-converter is much better than Yamahas.
  5. Tried two new Yamaha A6A receivers, both had the same eArc issues.
  6. I believe there are no other solutions to this QN90B eArc problem.  I now firmly believe that the QN90B and A models have a hardware and/or software permanent eArc system defect.