No Hdmi ARC on AV receiver when V4K is hooked

Hi Sam,

i’m sorry for the delay. I came back from work this evening and tried to turn on my tv :

No sound, problem is back.
The device was on (it turns on when my AV turns itself on).

I tried :
-rebooting V4K > no effect.
-Manually switching on “tv source” >no effect
-unplugging psu from V4K > sound came back instantly on AV before stopping and coming out from TV speakers only without my intervention (by checking sound settings from TV, it had set as internal speakers and forcing to ARC results in no sound still).

Before unplugging hdmi cable from V4K which is currently disconnected from power supply, i can do some more tests today and tomorrow if needed.

Else, sound is perfectly working from V4K and other hdmi sources are too from AV.

Note that i don’t have anything else plugged on my tv besides AV receiver.

There maybe something related to suspend or idling time like maerty said.


Have you tried connections as follows:

Onkyo RZ710 >> ARC Hdmi port
Vero 4k >> Next free hdmi port on the LG EF9500

My Setup is as follows with by soundbar:

Soundbar >> Hdmi 1 (ARC)
Vero4k >> HDMI 2
PC (NVIDIA HDMI) >> Hdmi 3
Bluray player >> Soundbar (Only because I’ve run out of HDMI ports on my telly)

ARC is working as it should for all devices. My understanding is the preference for setting this up so the audio return channel works (Arc) is to connect input devices to the TV first and only use hdmi on AVs when no further TV HDMIs are available. The return channel, will direct audio where is should be.

Thanks Tom.

I bought the V4K in order to get 7.1 and Atmos from my 4K media.
On TV’s hdmi, since it’s not e-arc (new gen ARC), i ll only get “simple 5.1 sound”, which i m not interested in.
All devices outputing DTS-HD or more sound quality get through my AV first.


Have you tried a different HDMI cable?

Thanks Tom.


Just posting here as in three months of using the Vero, just had my second ARC lock-up event. First time was a while back, after a full power down, the Panasonic TV could not establish an ARC connection with my Marantz AVR. After much random fiddling, it eventually came back. Last night I installed the latest OSMC test release, and when I went to use the system today, the TV remote volume and ARC were both broken. On this occasion it took less fiddling to get it back, and all now seems to be ok. But it does seem that the Vero has an issue with occasionally breaking ARC on some receivers.

It may not be relevant, but I get no ARC if the TV is switched on (or woken up) when the AVR is already on. The fix is to turn off the AVR and turn it on again. Is this a bug or just me not understanding CEC and stuff?

That’s never been an issue for me. My Panny TV and Marantz AVR have been playing nicely together for five years. Very rarely, the TV will lose the AVR as its speaker output but the fix is to go to the Viera Link menu in the TV and restart the AVR speaker output. What has been very disconcerting about the two incidents since I bought the Vero is that the restart in the Viera Lnk menu on the TV does not work, as if the AVR is locked out. The first time was quite stressful as no matter what I tried, I cold not recover the ARC. Eventually by some fluke it came back. Today, I simply removed the Vero entirely, including its HDMI lead, powered off the TV and the Viera Link started working again. All seems fine now, if it remains an infrequent problem I can live with it, not otherwise.


same Problem here.
My Setup LG B7 >> Denon AVR X3500h >> Vero 4K

As soon as Vero is hooked up via HDMI, no more ARC is working form all internal TV Apps like Netflix, Amazon, DAZN, Youtube…
When i unplugg the HDMI Cable from the vero (or the denon receiver) sound from all internal apps is back.

Any solutions?


With most TV’s (at least the ones i’ve played with) Your audio settings are fixed regardless of input. LG is a bit more flexible (frustrating?) as what it uses for one input is not necessarily the same as another. The first thing to check is that your TV settings when it stops working is actually set on ARC.

hi darwin,

thx 4 the information. i will make a video to see what happens, Sound output on LG doesnt change. when sound is gone from the internal apps its on HDMI Out (ARC), which it was before. this only happended when i first setup the tv. so HDMI 1-4 ist set to ARC and internal was on TV Speaker, when i changed it the setting is saved.

i guess im still not the only one with this problem?


Nope cLoudMV, no fix so far. Only workaround is to unplug HDMI when V4K is not in use.

Since we are a few to have this problem with various hardware, I’m guessing for something defective on our units.

You could try setting Settings>System>Input>Peripherals>CEC Adapter>Physical address>1 on the Vero.

Also make sure the AVR is plugged into hdmi 2 on your TV.

There is no doubt that there is a real problem with ARC. In my case the ARC lock-up (Marantz AVR, Panasonic TV) has only ever happened a couple of times, clearly others are affected by this much more. First time it happened I was pulling my hair out trying to fix it. But to be clear, this is a real thing.

Did I say it wasn’t? Although I could see how it might seem condescending or whatever to point out something (hdmi 2) that may seem obvious to some there are others that it may not seem so. I got tripped up myself on a LG TV I recently purchased as I just assumed that the one hdmi port on the back of the TV would be the correct port to plug in my AVR. It wasn’t until I went to swap cables that I turned on some additional lighting and was able to read the labels I saw my error.

As for your ‘lock-up’ issue that is probably the known issues with Denon and Marantz and happens to people who are not running any kind of Kodi box. I use a Denon receiver and have had to power cycle it a few times to straighten out CEC. I added a expensive power conditioner to my setup (because of a seemingly unrelated issues) and my AVR has not hiccuped since.

I have a wide range of devices on my AVR, never had a lock up on ARC before connecting the Vero. System ran fine for a few months, one day, out of the blue, ARC locked out. What was strange is that it was impossible to re-start the external speaker service from the TV menu, even after full power down. Only once the Vero was physically disconnected from the AVR did ARC come back. Happened again a while later, but thankfully has been trouble free now for quite a while. Not impossible that it is not an issue with the Vero itself, but the circumstantial evidence is very much pointing against it.

That is my workaround as well. Very annoying, but better than when I leave it plugged in.
If I leave the Vero connected the ARC locks out a few times a week. The only fix then is rebooting the Vero or disconnecting its hdmi. And rebooting the tv and AVR.

My setup is Vero 4K->onkyo AVR->LG C8

I’ve been watching all these ARC issue threads and can’t help but notice that everyone has an LG OLED TV.
I’ve experienced this issue myself (I have a C8).
It’s always happens when my children fire up the TV to use it with some other device (WiiU, WebOS app, etc.).
I have found that if I turn on my TV to the Vero and let everything establish, you can then switch it to a different input or launch and app and it works.
It’s like the Vero is willing to surrender if it’s up, but if it’s not you have to pull the HDMI to break it’s hold on your setup.
I have my CEC settings configured so if I press a button on the Vero it wakes up and the TV and soundbar follow.
So I always turn on my system that way since I’m usually using the Vero.
If I switch from there to something else, then no problem, but if everything is off and my wife or children turn on the TV with the TV remote and then pick an input for a different device or launch an app, then no ARC.
I know that sounds weird, but maybe it helps you guys out in your pursuit to finding a fix or work around.
My setup is Vero > Samsung HW-N950 > C8 ARC HDMI
My children’s WiiU is plugged directly into the C8.

I had the same issue which was fixed using Kontrarian’s advice: Vero 4K+ messes with ARC

Kontrarian, i encounter the topic’s issue with my Samsung Q950R tv, so it’s not about LG TVs.

Same as people thinking about Denon/Marantz AVR related, first time I noticed the issue, I had an Onkyo RZ710 AVR.

I think it’s needed to stay focus on AVR/ARC combinations not on other setups since this is a minimalist (although higher end) configuration.