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By Jose Antonio Campo
Dear Friends ,
Really looking forward to your help and support
My problem is i can not make work the HDMI ARC conection between TV and Sound Bar
TV LG OLED55B7P-S (latest firmware)
Sound Bar LG SK9Y (latest firmware)
NVidia Shield Pro 2017 (latest firmware in my region, waiting for Oreo)
HD Set Top Box Arris/Motorola (Cable) HDMI
Used the device manager on the WebOS to connect the Sound Bar , assigned HDMI ARC , Simplink , and tried both auto power yes and no, sound test did not work
NVidia shield connected to SK9Y HDMI IN , HDMI OUT (ARC) to TV LG HDMI 2 (ARC)
Works fine image and sound, sound of course is ok as it goes from NVidia to SK9Y directly
HD cable top box to TV LG HDMI 4 and I get no sound from the TV thru the HDMI ARC port (previously establish HDMI 2 (ARC) to sound bar)
I plug in the optical and works fine, Internal tv speakers works fine , BT fine….everything works but the HDMI ARC.
What I am doing wrong? I am worry it may be a HDMI ARC port problem, TV Is about 3 months old, soundbar is about 2 weeks old
Thank you in advance
I have a 55LJ550M (WebOS 3.5) TV, connected to an A/V Receiver via ARC.
Per the online documentation, when the TV encounters AAC audio, it will transcode that audio to Dolby Digital for transmission over ARC. See: http://www.lg.com/ca_en/support/product-help/CT20098005-1437136302910-others
However, the sound quality is very poor when this occurs. The sound is full of compression artifacts, and with some older A/V Receivers, this causes the sound to periodically cut-out.
Some of the WebOS applications affected by this issue are YouTube (which mostly uses AAC audio), any Netflix stereo programming, and using the Music\Photo\Video app to play music or videos with AAC audio. To me, it makes the entire YouTube application unusable.
Honestly, I'm surprised that WebOS doesn't just output PCM audio over ARC whenever it encounters AAC. This would make more sense, and it would require less processing power and sound much better. (I know that I can set the TV to output everything to PCM over ARC, but I do not want to lose DD 5.1 and DTS sound from other programming which works perfectly).
Is this behavior a known WebOS 3.5 issue? I know that my unit is a one of the cheaper LG sets--it is possible that this particular set is just too under-powered to function as designed?