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LG UHD TV digital sound out popping noise problem


Krash01

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Dear Readers,

I've a strange issue that I've been struggling for a week. I bought an LG43UJ634V UHD TV and an LG LHB645N Home Theater in a Box system.
I use HDMI ARC to connect the audio from the TV to receiver. LG has an option to chose between PCM or Auto at the Digital output settings.

If I use the PCM option everything sounds great, but I don't have 5.1, only 2.1.
And here comes the problem. When I choose Auto, 5.1 is on, sounds great but I have occasional popping noise (like when play something on an old LP player) it happens random, but for example during a film, it is very annoying. It happens with YouTube, Netflix, DLNA streaming, external devices, so the content doesn't matter. I think I've tried everything. I tested it with different HDMI cables, optical cable, but still have the problem. I tested it with a sound bar as well, the problem is the same.
When I play content from the receiver, there is no problem, the sound is wonderful, no popping. Also, the TVs speakers are okay.

I don't think it is a hardware issue, because the TV's sound is OK, the home theater's sound is OK, the problem only happens when I want to use the digital output of the TV (either HDMI ARC or Optical) with auto setting.
I called LG as well, the rep. said the she will pass this info to the technical team.

Do you have any idea, that it can be solved, or I need to wait for a software update?

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On 6/17/2019 at 7:27 PM, bobpoljakov said:

Hi, I have an older model, LM620S, it's OS is the one before WebOS, I think it's called NetCast. Same popping sound issue, with a LG home theater system. I've tried every setting, nothing helped, but the issue is not there all the tima, sometime I can hear it, sometime I can't, using the same video file. I'm using Xbox, external media player, internal media player, everything is connected to the TV, then the TV is connected using optical audio to the LG HT806, and HDMI is connected to the ARC from the HT to the TV - just in case I want to play DVDs, and to control the HT using HDMI-CEC. I was hoping that replacing the AVR might help, but thank god I found this forum before spending a 600$ on a new AVR. What makes me really sad is that newer TVs seem to have the same problem - as you've mentioned. My experience - but it might just my imagination, not sure - is that the longer the TV is on, the more possible that the issue will occur. And another fun fact, my girlfriend, and my roommate never recognized, never complained, not even when I'm telling them that there's this weird popping sound, they just don't hear it or don't care... in the meantime, this makes me mad all the time I hear it :D

 

 

I FINALLY RESET THE WHOLE TV AND THE POPPING NOISE HAS STOPPED COMPLETLY AND MY WIFI DOESN'T DROP ALL THE TIME NOW ALSO

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