After a lot of back and forth with cables and a new box we have determined that the issue is with our TV. I saw on the VIZIO website "change the audio out setting to PCM or L-PCM." Tried doing that but nothing. Does anyone else have any issues with their TV/HD cable? If so how did you fix the problem??? Pointless to pay for a HD box if we can't hear anything!!

I hope you guys don't mind that I jump in 🙂 Lasagna is right switching the STB to L-PCM mode should do the trick. You want to go into the 'User Settings' of the STB in one of two ways. Hit power, select then menu on the box itself (one after another) or ...

I usually recommend doing this on the box front panel itself rather than the remote since most people have the "power" button on the remote linked together such that the STB and TV power on/off together. I've found, and 2 out of 3 experts would agree, that it's a tad bit more difficult to see the menu on the TV screen if the TV powers off as you execute the sequence.

Change the audio out on the STB to L-PCM -- is that where you changed it? You have to use the special hidden menu on the STB to do this (there's a post or two here that I wrote a while back on that .... I'll have to dig it up). Changing the setting on the TV itself does nothing.I have a Vizio in my home office -- works fine with my 6xxx series STB.

This is an old thread but still relevant. this fixed worked like a charm. Thank you!

I have the same box with the 4 way arrows and was able to access the white screen using another remote ( I have several set top boxes and TV's) that was not programmed to this TV using the procedure that hubo described

had a similar problem with only on demand videos. live tv worked just fine with the default settings. i changed my additional hdmi settings from auto to pass through and it solved the problem. l-pcm mode didn't work on my vizio.

Many thanks to the persons taking the time to provide this resolution over a year ago.I recently replaced two STB's as an upgrade to continue receiving certain channels. The new STB connected to a big screen Vizio box was losing sound when flipping between channels too quickly or jumping between two distant channels. After swapping out the box a couple times, replacing all the cables, and speaking with VZ many times, I found this posting. When I again called VZ about it, they were not familiar with this solutioin. After much consultation, they helped me get to the white screen menu, and the change was made quickly and has worked perfectly.I had some difficulty getting to this new menu screen. The process that worked on my new model 7232 STB was: with TV and STB on: press STB power button, then press OK on the STB, then press Menu on the Remote. The white screen of options comes up, and the audio line was changed from AUTO to L-PCM.I powered off and back on, and the sound keeps working no matter how I change channels.

I have the new "cheap" HD STB model # QIP7100 2. I have tried hitting the power button then Ok then menu but I only get the normal menu which doesn't have any option to choose HDMI output. I tried it several times and can not get this "special white menu". Any suggestions? I am not sure if it makes a difference but my VZ remote is programmed to work both the TV & box. If it does matter, how do you un-program the remote so that it doesn't work the TV?

Worked like a charm! Wish I would have read this before I wasted 40 minutes on the phone with customer service only for them to tell me they were going to send me a new STB. Which would of had the same problem when it arrived!Thank you!

Vizio with no HD audio

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Will give this a try - have an HD Smart TV - Visio but everything we tried with Tech support this a.m. did NOT fix problem.

Sound is still ahead of picture on all channels - SD and HD.

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