XfinityTV and Equipment

[Andrewb321]

I just purchased a brand new 120mhz LED 46" Samsung HD TV:

http://www.bestbuy.com/site/Samsung+-+46%22+Class+-+LED+-+1080p+-+120Hz+-+HDTV/4834389.p?id=12185401...

I upgraded my service to HD and picked up a brand new HD cable box from a Comcast center.

The picture is amazing, but on some channels the audio is out of sync with the video.  The two channels I notice most are ESPN and AMC.  Sometimes it's hardly noticeable, but other times its 1-2 seconds off.  I have called Comcast support a few times now, and each time they do the same signal refresh and that does not fix the problem.  They sent a tech to my house, and that was a giant waste of time.  He didn't do anything, just walked in and said "There's nothing I can do." and then left.  He didn't even have another cable box to swap out.

I have tried a high end Monster HDMI cable (in place of the one comcast gave me) from the cable box to the TV, but this does not fix the issue.  I have upgraded the firmware on my TV to the latest release, and that does not fix the issue.

A weird observation - I was watching a movie (US Marshals) on AMC HD tonight and there wasn't much of a delay at all, if any.  I switched to another channel (TBS HD) and watched that station for a few minutes.  There is never any delay on this station.  I switched back to AMC HD channel, and the delay was now 1-2 seconds.

I don't know what's going on but this is ridiculous.  I believe it's a cable service issue and whether that is something that Comcast needs to fix or if the problem is coming straight from the broadcasting channels in question (ESPN HD & AMC HD) but this problem needs to be fixed.

What are the steps I can take to fix this?  The techs on the phones don't seem to know how to do anything other than refresh a signal.  Are there higher tier techs that I can work with to resolve this?

[ModMaster]

Their might be a option in your TV's firmware called 'lip syncing.' I would set that to default, however, it can be used to match the sound to video. Edit: The comment below myn is really good to know.. Thanks

[rog286713]

this is normally a network issue, but if you are hooked up hdmi which I will guess you are, try if you can to switch to component cables and see if the issue goes away.  If it does there is an issue with the hdmi port.  Also what box do you have.

[Andrewb321]

I tried using my box with AV cables and the delay was still there.  I also tried plugging the coax directly into my TV, but after doing that I was only able to see a couple basic channels (non HD) so I couldn't really test anything out by doing this.

I have the Xfinity RNG110.

[JohnG]

Here's a suggestion to try.  If you haven't done so, try the cable box remote's Audio setup page to change to a different setting.  Try each one to choose the best.  Get there by clicking the set-top box remote's menu button TWICE and then select Setup and then Audio settings.

If this fails, turn on a channel where you have a good audio and then turn off the set-top box, leaving the TV ON.  Using the cable remote, select Cable then press Guide and you will see a settings menu.  Nothing audio is there but you should be sure that the cable box is set to the best HDMI/component setting for your TV.

Choose 1080i if that is your TV's scanning rate capability. Then hit power on the remote to check the channels for the audio delay problem. Try setting it to "Pass through" if the symptoms continue.

You should check your TV's info settings to verify the cable box's signal scanning rate is the one you need for your TV - 1080i or 720.

Hope that helps.

[Wishin4Fios]

I have the same problem with my TV. It's primarily on ESPN HD (not on ESPN 2 or ESPN in standard def). A few other channels have problems but the audio on ESPN HD is consistently off.

I have my box hooked up through HDMI to the TV and the audio from the box goes to a 5.1 receiver. Most channels are fine and DVDs/Blu Ray/Netflix streaming looks fine.

Any ideas how to fix this annoyance?

[redcullen1]

I have same problem. A tech was just here bad couldn't do anything.
This sounds outrageous that COMCAST charges us for service and
then can't deliver. The tech just packed up his gear said "Sorry about
that and left."