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Specialist
Posts: 13
Registered: ‎01-06-2014
Message 1 of 65 (19,801 Views)
Accepted Solution

HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

Hello,

I connect the Sony soundbar to my LG Smart TV via HDMI ARC. I followed the instructions in the manual. When I turn the setting on the TV to HDMI ARC, the sound comes out of the soundbar for 5 seconds and then it goes right back to the sound from the TV.

I have a high spped HDMI cable connecting from the HDMI ARC (out) on the sound bar to the HDMI 1 ARC on the LG TV.  I have my Motorola cable box hooked up to HDMI 2 and I have my DVD player hooked up to HDMI 3. I changed the setting in the Amp Menu to HDMI/TV. 

I then go into the sound settings on the LG TV and change it to HDMI ARC.  Sound then comes out of the soundbar for 5 seconds and then stops and goes back to TV sound. 

Any ideas?

Thank you,

Tony Stockfish

Specialist
Posts: 13
Registered: ‎01-06-2014
Message 2 of 65 (19,570 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

More info: I went into the Amp settings for the soundbar and I turned the HDMI control function to Off. Once I did that, the soundbar then worked with the TV.  I then turned the TV off and the soundbar and turned them both back on and it no longer works no matter what I do. I turn the HDMI control function to On and it still does not work. I can't tell if it is the TV or the sound bar. Somehow, the soundbar is not handshaking with the TV or vice versa. Are they compatible?

Thank you

Specialist
Posts: 13
Registered: ‎01-06-2014
Message 3 of 65 (19,557 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

More info: I exchanged the sound bar for a new one. When I got home to hook up the new one, I made sure I plugged in everything correctly and changed the function settings correctly. I double checked just to make sure.  

The ARC function on the LG TV will only work if you have the Simplink function turned on. With the Simplink turned on and the HDMI C setting on the sound bar turned to 'On' and the input to HDMI/TV, it works.  However, If I turn off the the TV and sound bar, it stops working until I cylce through the settings of the TV and sound bar. I then tried only turning off the TV and leaving the sound bar on and it now works all the time. So now, I have to leave the sound bar on all the time. This tells me that there is something wrong with the sound bar. Somehow, when I turn off the sound bar, it resets itself and does not retain the settings. I am hoping somebody from Sony CS reads this post and has some kind of answer or they come up with some kind of FW or SW upgrade.

Thank you

Expert
Posts: 2,040
Registered: ‎05-23-2013
Message 4 of 65 (19,554 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

[ Edited ]

Hi t3dfish! Your helpful information & feedback is much appreciated. Let me escalate this concern for them to further look into this. Thank you!

Moderator
Posts: 164
Registered: ‎04-09-2013
Message 5 of 65 (19,530 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

Hello t3dfish,

 

I have reviewed your issue but I am unable to duplicate it. This was expected as I do not have your exact TV to test with. I am curious, you mention everything works fine if the sound bar is left on. What happens if the TV is left on and the sound bar is turned off and on?

Specialist
Posts: 13
Registered: ‎01-06-2014
Message 6 of 65 (19,527 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

If the TV is left on and I turn the sound bar off. Once I turn the sound bar back on, it does not initiate the ARC and the TV reverts back to TV Audio.  To get Audio from the sound bar back again, I go into the Amp setttings / HDMI and turn HDMI-C function to off. Then the audio comes from the sound bar.  This happens whether I leave the TV on or off. 

On reading the instruction manual for the sound bar, the HDMI-C function is supposed to be set to On in order for the HDMI (ARC) to work, but in my case it works if it is set to off, but only If I turn the soundbar off.

To get it back working with the correct settings on the TV and sound barI turn off the TV and leave the sound bar on and then I turn the TV back on, I then go back in the Amp settings and turn the HDMI-C function back to On and then I'm back to where I only turn off the TV and leave the sound bar on.

Thank you,

Tony

Moderator
Posts: 164
Registered: ‎04-09-2013
Message 7 of 65 (19,519 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

[ Edited ]

Unfortunately there are no steps I can advise you to take right now that are going to resolve your issue. What we can do (depending on circumstances) is really try to narrow down the issue. Would you happen to have a 2nd TV to test with that has ARC? Can you confirm that your LG TV is currently up to date with software.

Specialist
Posts: 13
Registered: ‎01-06-2014
Message 8 of 65 (19,515 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

Unfortunatly I do not have another TV with the ARC function. I am trying to find a way to make that happen.

At first I thought it might have been the TV so I called BestBuy (who I bought the TV from) and had hem schedule a technician to come to my house. The technician checked the TV for updates. Everything is up to date on the TV.  He tried to get it to work and determined that there is some type of incompatibility between the 2 devices. I, myself, beleive that it is software related and not hardware related.  LG has Simplink for their HDMI CEC and Sony has Bravia Theatre for theirs. There somthing in the signals that each device is sending and they are not agreeing with each other.

Thanks for the quick replies. Hopefully I will find a solution.

Tony

 

 

Moderator
Posts: 164
Registered: ‎04-09-2013
Message 9 of 65 (19,512 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

If any information becomes available that I beleive will assist you in your situation I will promptly let you know.

Specialist
Posts: 13
Registered: ‎01-06-2014
Message 10 of 65 (19,509 Views)

Re: HT-CT260H HDMI ARC issues with an LG 55LA7400 Smart TV

Thank you. I will post anything new I have to give as well.

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