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no sounds output on Sony KDL-40EX720

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I just bought a Sonos Arc soundbar. I connected seamlessly to the network. When I connect it to the TV, the TV says “Sound System Active and switches to that output, but no sound comes out of the soundbar. The TV is approximately from 2011, it has an HDMI Arc Port, it does have Sonos Arc listed among HDMI devices.

It has the latest firmware form 2014, Sonos has the latest update too. I tried the disconnect/reconnect steps, set the audio format to PCM. I normally use an android TV box, but just to make sure that wasn’t the culprit, I disconnected it and plugged the antenna cable straight into the TV, still no luck.

The connection within the Sonos app to the TV fails, which is probably the reason for the issue but I don’t know how to fix that...

Any thoughts on what else I can try?

Thanks,

Gaetano.

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Best answer by GuitarSuperstar 9 March 2021, 21:12

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30 replies

G
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So it’s not the HDMI input that is fried, it is the ARC circuitry in the TV, which creates and sends the signal out to the Arc, that appears to be non functional. 
 

The HD Fury device would indeed be an ideal solution, as GuitarSuperstar says. Or, a repair of that TV, or even a replacement TV. 

indeed, it’s all a matter of evaluating the most adequate choice for a TV that is 10 years old…

The repair, well, the board is shipping from the US for $180+ shipping cost seems more cost effective if I can repair myself, which doesn’t seem too complicated for someone who has built his own computers for the past 30 years, but how long will the rest of the old lady live…

All things considered, I will buy an HDfury Arcana because it seems it connects to ANY HDMI port to transmit the video signal, and when time comes to replace the TV, the HDFury may still be needed to solve lip sync issues, so it’s not wasted. Worst case, if there is no lip sync issues, I’ll sell the HDFury at that time.

Granted, without the ARC circuit working, I won’t be able to turn the TV on and off with the Google assistant, but that is a minor problem, just as long as I can get the video signal through to the TV and get Atmos out of the Sonos Arc, I’m happy...

Airgetlam

So it’s not the HDMI input that is fried, it is the ARC circuitry in the TV, which creates and sends the signal out to the Arc, that appears to be non functional. 
 

The HD Fury device would indeed be an ideal solution, as GuitarSuperstar says. Or, a repair of that TV, or even a replacement TV. 

Bruce
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Yes, the Vodafone would connect to the Arcana’s HDMI IN port. The TV would connect from the TV’s HDMI ARC port to the Arcana’s HDMI OUT port. The Sonos Arc would connect to the Arcana’s eARC OUT port.

But of course none of this will work if your HDMI ARC port is fried on your TV.

Does the Vodafone support Dolby Atmos audio?

my apologies, I was sure I had responded to this but apparently not…

 

The vodafone box support chromecast 4k and can be turned on and off by Sonos, so this should make it at least hdmi-arc capable, and  hence Atmos capable from what i have read.

Forgive my ignorance, but I thought that the HDfury Arcana box had an HDMI output that would plug into any HDMI port, granted, it won’t have Arc capability, i.e. I cannot turn it on an off with the Sonos bar, but it would display image in 2K quality. Is that a correct assumption?

Then the eArc-out  port of the HDfury would plug into the Sonos-Arc and deliver maximum Atmos output. I am referring to the HDfury Integral which does split the signal and downscale the video to 2K video for older TV’s. It is quite expensive, so I am still pondering the purchase of a new TV… as mine is at least 10 years old...

For the clarity, my HDMI-Arc port is not completely fried, it does display video and sound from any source, it just won’t detect the Sonos-Arc, while all other HDMI ports will “see/recognize” the Sonos Arc but not allow any connection.

G
Userlevel 7

Yes, the Vodafone would connect to the Arcana’s HDMI IN port. The TV would connect from the TV’s HDMI ARC port to the Arcana’s HDMI OUT port. The Sonos Arc would connect to the Arcana’s eARC OUT port.

But of course none of this will work if your HDMI ARC port is fried on your TV.

Does the Vodafone support Dolby Atmos audio?

"Receive with simplicity everything that happens to you." - Rashi
G
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Your TV is from 2011. I’m 99.99% sure it won’t pass through Dolby Atmos audio from any internal apps or external devices.

If your HDMI ARC port actually worked, I would have recommended getting the HDFury Arcana if you want Dolby Atmos audio using your current TV. https://hdfury.com/product/4k-arcana-18gbps/

Just wondering, could I plug the HDMI output of my android TV box (4K compatible) in the HDFury Arcana input and connect the regular HDMI output to the TV while I connect the HDMI-eArc output to the soundbar? Passing through two boxes is asking for trouble, but this would be way cheaper than buying a new TV…

 

According to this article, it should work, provided my android TV has the right output capability. I cannot find detailed specs for the box (Vodafone TV), except it does support 4K Chromecast - does that make it an eArc output that could plug into the HDFury?

 

Right now, I am able to turn the Vodafone box off with the Sonos Google assistant, that sounds like Arc functionality right? but does the 4K capability make it an eArc-capable box and make it worth getting the HDFury?

G
Userlevel 7

Just one last question guys, I looked at buying a new TV to match the capabilities of the soundbar and found this one that seems like a good option. The only issue is that it says in the footnotes that eArc is available through a future update (search for “eArc” and click on footnote 3). Does anyone know if this TV already has that update or if it’s still in the making? I am totally out of my depth with modern hifi, so I can’t tell...

https://www.sony-asia.com/electronics/support/televisions-projectors-lcd-tvs-android-/kd-55x9000h/specifications#rfn-3

I believe the Sony X9000H is the same model as the X900H. eARC is available on the X900H. You may want to contact Sony to confirm this. One other note: Some X900H users have experienced some audio lag and audio cutting out with the Arc. You can search for “X900H” in these forums to read more about it.

"Receive with simplicity everything that happens to you." - Rashi
G
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Just one last question guys, I looked at buying a new TV to match the capabilities of the soundbar and found this one that seems like a good option. The only issue is that it says in the footnotes that eArc is available through a future update (search for “eArc” and click on footnote 3). Does anyone know if this TV already has that update or if it’s still in the making? I am totally out of my depth with modern hifi, so I can’t tell...

https://www.sony-asia.com/electronics/support/televisions-projectors-lcd-tvs-android-/kd-55x9000h/specifications#rfn-3

G
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Having checked the manual for this TV, I concur, there is only mention of the ARC channel being capable of Dolby Digital, and not Dolby Digital Plus, required for Atmos. 

Actually, KDL-40EX720 does support Dolby Digital Plus according to this page:  https://www.sony.co.uk/electronics/support/televisions-projectors-lcd-tvs/kdl-40ex720/specifications

 

But since my ARC port is half-fried, it doesn’t make a difference to my dilemma...

G
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Thank you all for the very helpful comments! Special thanks to GuitarSuperStar for guiding me step by step!

Airgetlam

Having checked the manual for this TV, I concur, there is only mention of the ARC channel being capable of Dolby Digital, and not Dolby Digital Plus, required for Atmos. 

Bruce
G
Userlevel 7

Your TV is from 2011. I’m 99.99% sure it won’t pass through Dolby Atmos audio from any internal apps or external devices.

If your HDMI ARC port actually worked, I would have recommended getting the HDFury Arcana if you want Dolby Atmos audio using your current TV. https://hdfury.com/product/4k-arcana-18gbps/

"Receive with simplicity everything that happens to you." - Rashi
G
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According to this link, I could: https://support.sonos.com/s/article/4844?language=en_US

G
Userlevel 7

yes, it’s working fine on Optical, but the app said it would not support Atmos on Optical. Some sound is better than no sound, but part of the reason I got the Sonos over the Bose 700 was the support for Atmos...

Even if the Arc worked with your TV’s HDMI port, you still wouldn’t be able to get Dolby Atmos audio with your older TV.

"Receive with simplicity everything that happens to you." - Rashi
G
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yes, it’s working fine on Optical, but the app said it would not support Atmos on Optical. Some sound is better than no sound, but part of the reason I got the Sonos over the Bose 700 was the support for Atmos...

G
Userlevel 7

Keep the Arc connected to the TV with the optical adaptor. Don’t use the HDMI port. Do you hear any audio from the Arc?

"Receive with simplicity everything that happens to you." - Rashi
G
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I have done that and it is connected, so whats next? The box for the optical adapter says it's only for the initial setup. It is not clear whether i should now try the hdmi arc port.

G
Userlevel 7

Turn off “Control for HDMI” on your TV.

Set “HDMI/DVI Audio Source” in your TV settings to “Auto”.

Run “TV Setup” in the Sonos app and follow the instructions and connect the Arc to your TV with the optical adaptor.

"Receive with simplicity everything that happens to you." - Rashi
G
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OK, I was looking for a cap on the TV socket but there was one on the cable… I was able to connect it through optical.

It said this was for initial setup only on the box. What do I do now? do I disconnect it or leave the optical connection on ans the ongoing connection? 

G
Userlevel 7

Can you post a photo of the optical port on your TV?

"Receive with simplicity everything that happens to you." - Rashi
G
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The TV has the latest software and the optical cable does not fit in the optical socket of the TV, it won’t get completely inside. Are there different format for optical connections?

It should fit. Be sure you are inserting it correctly. Make sure there isn’t a small cap covering the lens of the optical connection on the adaptor.

I tried every angle, I can see a red light. There was initially some kind of membrane or cover but it came off

G
Userlevel 7

@GuitarSuperstar, I did all that and the TV says “no device detected” and the Sonos App says Bravia Sync not connected.

Now I remember I had an issue with my set top box (Optus) after a lightening strike that also fried an ethernet port on another device. I had my set top box replaced thinking it was the box that was fried, and the box worked fine after that (not sure in what port though, that was 5 years ago).

Could it be that the HDMI input of the HDMI ARC port is working but not the HDMI ARC out? In other words, could the ARC functionality be fried while the rest works fine on HDMI 1?

Yes, it is very possible that the lightning strike damaged the HDMI ports of your TV. Were you able to get the optical adaptor connected?

"Receive with simplicity everything that happens to you." - Rashi
G
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@GuitarSuperstar, I did all that and the TV says “no device detected” and the Sonos App says Bravia Sync not connected.

Now I remember I had an issue with my set top box (Optus) after a lightening strike that also fried an ethernet port on another device. I had my set top box replaced thinking it was the box that was fried, and the box worked fine after that (not sure in what port though, that was 5 years ago).

Could it be that the HDMI input of the HDMI ARC port is working but not the HDMI ARC out? In other words, could the ARC functionality be fried while the rest works fine on HDMI 1?

G
Userlevel 7

The TV has the latest software and the optical cable does not fit in the optical socket of the TV, it won’t get completely inside. Are there different format for optical connections?

It should fit. Be sure you are inserting it correctly. Make sure there isn’t a small cap covering the lens of the optical connection on the adaptor.

"Receive with simplicity everything that happens to you." - Rashi
G
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The TV has the latest software and the optical cable does not fit in the optical socket of the TV, it won’t get completely inside. Are there different format for optical connections?

Airgetlam

Might not hurt to also check for updates from Sony for the TV set.

Bruce
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