Intermittent No Audio via HDMI ARC on AMP Ultra (Requires Reboot)

[chiunyi.ko]

I received my AMP Ultra a couple of days ago, and overall the experience has been quite good so far.
However, I’d like to ask if anyone else has encountered the following issue:


After turning on the TV, the AMP Ultra is able to detect HDMI ARC normally,
but there is no audio output (the issue happens intermittently).
Whenever this occurs, I have to fully reboot the AMP Ultra for the sound to come back.


At the moment, I haven’t been able to identify the exact cause.
I’d really appreciate it if anyone who has experienced a similar issue could share possible solutions or settings to check.


TV model: Panasonic TN-55W80AGT

 

[Wiimer]

I received my AMP Ultra a couple of days ago, and overall the experience has been quite good so far.
However, I’d like to ask if anyone else has encountered the following issue:


After turning on the TV, the AMP Ultra is able to detect HDMI ARC normally,
but there is no audio output (the issue happens intermittently).
Whenever this occurs, I have to fully reboot the AMP Ultra for the sound to come back.


At the moment, I haven’t been able to identify the exact cause.
I’d really appreciate it if anyone who has experienced a similar issue could share possible solutions or settings to check.


TV model: Panasonic TN-55W80AGT

When the TV audio stops working, what does the status look like when you open the WiiM app's playback screen? Is the spectrum icon moving, indicating playback is active?

Also, if not, does pressing the play icon come back the audio?

 

[Selfactual]

I received my AMP Ultra a couple of days ago, and overall the experience has been quite good so far.
However, I’d like to ask if anyone else has encountered the following issue:


After turning on the TV, the AMP Ultra is able to detect HDMI ARC normally,
but there is no audio output (the issue happens intermittently).
Whenever this occurs, I have to fully reboot the AMP Ultra for the sound to come back.


At the moment, I haven’t been able to identify the exact cause.
I’d really appreciate it if anyone who has experienced a similar issue could share possible solutions or settings to check.


TV model: Panasonic TN-55W80AGT

I too am having the same problem. After being off all night, when turning on the TV the Wiim Ultra responds, but no sound. The status in the Wiim amp is designated as Offline. I have to reboot to get audio. I have 2 TV's with the same Wiim Ultra and it is symptomatic of both. I turned in a ticket.

 

[chiunyi.ko]

When the TV audio stops working, what does the status look like when you open the WiiM app's playback screen? Is the spectrum icon moving, indicating playback is active?

Also, if not, does pressing the play icon come back the audio?

Tonight, I tried enabling eARC in the TV settings and switched to the original HDMI cable.


At first, everything worked fine and audio output was normal.





However, when I turned on the TV again today, there was no sound once more.


Having to reboot the AMP Ultra every day to restore audio is becoming quite frustrating.





Does anyone have suggestions on what else I could try, or any recommended settings to resolve this issue?

 

[Selfactual]

The status shows Disconnected. This applies to not one, but two Wiim Ultra units.

 

[Wiimer]

View attachment 32614
Tonight, I tried enabling eARC in the TV settings and switched to the original HDMI cable.

Turn off eARC. WiiM does not support eARC.

At first, everything worked fine and audio output was normal.





However, when I turned on the TV again today, there was no sound once more.


Having to reboot the AMP Ultra every day to restore audio is becoming quite frustrating.

Does anyone have suggestions on what else I could try, or any recommended settings to resolve this issue?

It seems the HDMI connection remains disconnected and can't be reconnected.

I experience a similar issue with my TV. I turn off the TV using a smart plug when not in use, but when I turn the TV back on, the audio stops working. Reconnecting the HDMI cable restores the audio.

Have you submitted a ticket through the WiiM app's feedback section? Submitting a ticket after reproducing the issue sends device logs, which helps troubleshoot the problem.

 

[Selfactual]

I upgraded the Ultra firmware to the beta version 5.2.804548, problem solved.

 

[wilkman]

Hi, I experienced the same issue on my Wii Amp. It usually worked quite good but from last week on I experienced the same problem (no Update made). The Wiim Amp activates automatically when I switch on the TV. But nowadays it's a 50/50% chance that the sound comes out. The connection is properly set to HDMI in the app and volume setting with the TV-Remote works on app as well. A reboot usually fixed the problem (no solution for me)

Yesterday I switched on earc on my LG TV which fixed the problem for now. Let's see if this helps.

My WiimAmp runs on Firmware 5.0.739659. Can we expect an update for the wiimAmp as well?

 

[harkpabst]

Yesterday I switched on earc on my LG TV which fixed the problem for now. Let's see if this helps.

My WiimAmp runs on Firmware 5.0.739659. Can we expect an update for the wiimAmp as well?

The WiiM Amp (just like all other WiiM devices) doesn't support eARC. If enabling eARC did fix anything that's rather a bad sign regarding LG's implementation.

HDMI-ARC is a tricky beast and there are always combinations that won't work or - as in your case and certainly most annoyingly - will fail intermittently, with no obvious pattern.

The general rules are: Use the best HDMI cable you can dind (the WiiM supplied cable is known to work well). Make or break HDMI connections with the mains power removed from all devices. Keep your devices' firmware (including your TV) up to date. Make sure to find and understand all the ARC related settings of your TV (manufacturers use their own slang for standard HDMI and CEC features, unfortunately).

It might be helpful to start your own thread, providing more detail on your exact TV model and setup. If other members happen to have the same model they.might be able to add their own experience.

Good luck.