Panasonic ZT60: audio output lags behind video for broadcast TV
I'm a long time lurker, and I've learned a lot from reading these forums. But not enough to figure out how to fix the following problem.
I have a Denon 3313 AVR and a Panasonic ZT60 plasma display, which I had been using as a monitor only until recently. Last month I dropped cable and added a pair of rabbit ears, so now the Panasonic is a source (for live TV) as well as a display.
The problem is that, when watching live TV with audio routed through the Denon, the audio lags behind the video by a noticeable amount. The lag is variable; certain channels are worse than others. The delay is maybe 50ms--it's hard to say for sure, but it's enough to be annoying. This happens whether I use HDMI ARC or the optical output to get the audio to the AVR. If I use the TV's internal speakers, the audio and video are perfectly in sync (but that's obviously not what I want to do).
The Denon has the ability to delay the audio, of course, but there's no way to add a "negative" delay. And there's no way to delay the video on the Panasonic. (Is that ever a thing?)
I have tried modifying every setting I can think of to get this to work. The HDMI auto lip-sync feature doesn't seem to have any effect at all. I've tried to turn off all the audio processing I can to remove any delay introduced by the AVR. Nothing seems to help.
The other sources attached to the Denon (an Oppo Blu-ray player, a Roku) don't exhibit this problem, which is why I think this is an issue with the Panasonic, but I'm willing to blame the Denon instead if that seems more likely. I just want a way to correct it.
Any ideas? Please help!
Last edited by icylucifer; 01-21-2016 at 10:37 AM.