Same problem. Sound working fine on 4k channels only - possible solution.

Sounds like an HDMI handshake issue between the receiver and the TV sound. To be honest I found Juniper’s posts straightforward and not at all ‘useless.’ With the information given by the OP and other people who were having ‘similar’ issues, there were no additional helpful technical details given so it’s theoretically impossible to help without the additional info. Remember, we aren’t mind readers, but rather customers just like you on a public forum. 

Perhaps if he spoke as articulately as you, he wouldn’t have been seemed so offensive. You can ask questions without making the object of those questions feel stupid. It drives people away - I presume that’s not the goal of these forums. In any event, it was nice of you to come to the defense of you colleague. I simply wish he would have asked for information in an inquisitive and interested manner; that would have yielded appreciative responses. He either didn't know how to do that, or didn’t care. I don’t know, I’m sure it’s my problem. Professionally communicating in a very, very public and political setting is what I do for a living. What I say often ends up in newspapers, so I’m careful. What he said was dismissive and ineffective, maybe even rude. As I’m sure this was likely my only comment on this board, I’ll just politely bow out of further conversation. (FYI, when I commented in the other forum when the comments were made, I did not include any reference to Juniper). Good night. 

I have helped many in the forum. Yes I do ask a lot of clarifying questions, as knowing exactly what setup someone has and what specifically they have tried helps narrow down what the problem may be. My posts are normally very articulate, but do tend to be rather blunt as I avoid sugar coating and want to stick to the facts as pure as they can be.

If someone "feels stupid" because of questions asked to make sure we are on the same page of understanding, or it is encouraged to verify facts instead of assuming and blaming (posibly falsely) one company or another, then that is their own problem. My posts are intended to help by providing guidance, perhaps a fix, or at least getting to the correct root of the problem to know where the responsibilty lies on getting it resolved.

I am here to speak personaly and directly. This is not my job so I do not worry about speaking professionally, as there is no company I am representing so do not have to provide a feeling of customer service. Thankfully this is not speaking in a political setting, as I find such communication to be a bunch of double talk or straight up lies to just make your own position look good while often stabbing a knife (metophorically) into someone's back. Simply put, I can speak honestly without having to worry about how it is representative for someone or with anything underhanded or between the lines. If my words are posted in a newspaper for whatever reason, as long as they correclty quote me, then it will be (I feel) more honest then someone who has to be careful with what they say because of their work.

To be clear, I am not intending to be rude or offensive. I just prefer to keep it direct and honest and avoid any such public relations or customer service-like speech. This is a public forum with self-created user names that are not identifying, so speaking professionally (if I ever had reason to) is pretty much worthless in this medium.

I also had sound only on 4K channels after installing a new LG G5 TV. I discovered that activating 4K Deep Color in the LG menu for optimal 4K viewing caused the audio loss on regular channels. Sound returned to normal when Deep Color was  turned off.

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