LG Oled C7 and Marantz Av7703: arc issue

PhR34k

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I have my TV setup with my av7703 pre amp.
When watching thru the streaming apps on the LG I want to listen thru the marantz but I can't get any sound out.
I have the hdmi on hdmi 1 which is the arc port and the settings are on. I can up and down the marantz volume with the TV remote but like I said, no sound comes out.
Any suggestions?
 
Is the arc port not HDMI 2?

Also have you turned Simplink on in the TV settings?

George
 
Is the arc port not HDMI 2?

Also have you turned Simplink on in the TV settings?

George
Yep hdmi2 is the arc channel. Works a treat for me
 
Is the arc port not HDMI 2?

Also have you turned Simplink on in the TV settings?

George
I tried port 2 but then I couldn't control the amp with the TV remote, I get an error msg on the amp that it can't find any arc source.
Yes Simple link is activated
 
I have similar problems with LG Oled C7t and Anthem MRX 1120, playing from the TV Netflix app, the audio pass through is good for pcm 2 channel, but unstable for dolby 5.1 and dolby Atmos. Link through HDMI ARC with CEC control enabled on both sides. What a disappointment as Dolby Vision is excellent, but hifi audi is zero. LG tech guys looking into the problem.
 

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