I just picked up the TH42PZ85U for my new apartment, and I have to say, what a TV! But, there is one thing I am stressing over, the dreaded lip sync issue, or so I think it is.

I've always been a stickler for this issue, whether its in gaming, converting videos to different formats, or etc. When the audio doesn't sync up with the video, it drives me insane.

I don't have an external amp like most of you guys, just playing the sound normally through the TV speakers for now, but I do feel there is a delay, albeit very slight. Im trying to convince myself its the dvd, its me, or etc.

One example was that I was watching the Chapelle's Show dvd. On the Title menu loop, one of the guys taps his foot on the floor (If you have these dvds, you'll know what I mean), and I'll be damned, the sound wasn't matching up to the tapping.

It's mostly noticeable in quick sounds, yells, etc because the actors mouth movements are more sudden, so you can see the mouth change more drastically.

Now, I'm trying to figure out, is this a known issue with the TV? I searched, and it seems that this issue is mostly relegated to older plasmas, or plasmas with receivers attached.

Is there any dvd that is a standard check for things like this?

Am I just insane, now that I am constantly watching the actors mouths??!?1

anyone have any ideas?

i don't know how slight (when you say slight)....possibly you are more sensitive than an average person..don't recall audio delay with dvd, but they do happen ocassionally some tv programs.

anyway..you can try a couple of things to isolate the issue (albeit slight).

1.. if your are using hdmi, change to compo and see if you are still getting the same delay.

2. reset the tv and the dvd (i.e., pull out the ac for more than a minute and restart both

anyone have any ideas?

i am using component, is it possible the upscaling is causing it to lag?

yes....quite likely....any processing (scaling/ interlacing/de-interlacing) requires audio/video re-sync and based on the tv and processing some mismatch is likely.

i am using component, is it possible the upscaling is causing it to lag?

So after playing with the TV for another week or so, I am convinced there is about 15-35ms delay on the video (meaning the audio starts that much earlier than the video). All the sources are going directly into the TV and pushing audio out through the TV speakers.

DVD - upconverting to 1080p through HDMI passing audio and video
XBOX360 - on 1080i setting through Component cables

I just find it odd that theres would be a delay on all the sources - even native upconverted 1080p signals.

I have panny 50pz800u and I have lip sync problems when I watch a recorded movie. We just had u-verse and an HD package (which I like) installed so I recorded some HD movies from Showtime. Both had lip sync problems that seem to get worse the longer the movie plays. I'm using HDMI cables to connect my uverse receiver directly to the back of the tv. Is this a common problem? Can it be fixed?

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Has this been diagnosed as an input-dependent problem?

I wonder if a firmware update from Panasonic would address this?


TriRyche