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Center and Surround messed UP, LG AR702NS-DD

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Hi there!

i am from Austria (yep) and i bought this nice surround receiver "LG-AR702 NS". I bought it used last year. I'm very pleased with the sound and i really like it.

Here comes my problem. LG Austria, Germany .. do not support this product anymore. You can't even anything about it at LG-Online in my country. Its' like it didn't ever exist. 

So when i found out that there was no support here in my continent, i started researching and found out, that there are some information about it down under. 

So my problem is, that when i connect my PC or PS3 directly via HDMI to the LG, there is this problem, that it recognizes the "multi-channel" input, but messes it up, and center comes from surround right. I got this problem on PC when using windows-sound-configuration. when i click on the center, the test-sound comes from the back. When i watch a downloaded 5.1 video (movie-trailer), the sound goes right. But games, programs and windows do not work well. 

Same at PS3. Netflix works fine. Amazon Prime Video not.  Netflix even works fine, when i got 1. PS3 to TV via HDMI. 2. TV to LG via Toslink) 

I think it depends on the signal that comes into the AVR. I found out, that there was a similar problem with "Denon" receivers. This could be fixed with a firmeware update. But i couldn't find anything for the LG.

Do you have any idea in fixing this? 

BTW. as i bought this used, i didn't get a microphone for audissey set-up. and it is IMPOSSIBLE to geht one used-part here in Europe. is there any help for me too? :)

thank you a lot. nice greetings from the other side of the world ;)


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