Originally Posted by bjp_lv
I'm getting the audio dropouts on all 4 DVDs that I tried. I am getting them through both the optical and coax digital outputs, but I didn't get them over HDMI or the analog outputs. I've been running 720p. I tried calling LG customer service and after sitting on hold for a while, their computer took my telephone number and said they would call back, but they have not.
My final troubleshooting was to hookup my old mintek DVD player and it worked fine over the coax digital audio output, so that narrows it down to the DVD player in my mind.
I'm taking it back to Bestbuy for a refund.
Here's a section from a oppodigital.com Q&A re: "the audio sync problem with 720p." Altho it applies to an Oppo player, the two Q&A's I copied below, thanks to oppodigital.com
, may apply or at least give some hints on your situation?
"Q: What causes Audio sync issue?
A: The Audio-sync error can be caused by several factors. The most common are video source (DVD mastering) and video buffering.
How the DVD was mastered will affect the overall playback. There are many DVDs which have been mastered incorrectly and suffer from slight audio-syncing not matter what player or display unit is used. The effect of de-syncing can be so negligible it is barely noticeable, to such an extreme that whole audio bits are audible before the according visual actions.
Another common type of Audio-sync errors is the cumulative effect of video buffering. In order to produce the best possible video quality, when the Faroudja chip in the DVD player performs de-interlacing and scaling, it may need to buffer some video frames to do motion analysis. This introduces a slight delay to the video. Usually this delay is not noticeable by the viewers. Certain displays also buffer video frames for many reasons - to scale up the 720p or 1080i video to the display's native pixel resolution, or to process the video in order to reduce the "rainbow effect" on some DLP displays, or even to do motion analysis and adaptation (duplicated effort but cannot be turned off). The buffering by displays introduces another video delay. Since normally audio is not delayed, the cumulative video delay becomes noticeable and causes the Audio-sync problem. The problem happens rarely and randomly because the time it takes the DVD player and the display to process the video depends on the complexity of the video scene.
As a rule of thumb, if the Audio-sync error occurs infrequently and at preset moments, it is a DVD mastering issue. When it occurs frequently and is not repeatable by rewinding, stopping and resuming playback, then there are several steps you can take to prevent instances of Audio-sync errors. See below.
Q: How to fix Audio-sync issue?
A: Audio syncs are DVD player, display device, and DVD discs dependent. From DVD player perspective, the solution to the Audio-sync error is to introduce an audio delay to compensate for video buffering. There are two ways to do this: 1. The OPDV971H has an audio delay feature. To access this feature, press the Setup button, then select Delay in the Audio tab. Audio delays are selectable from "no delay" to 50ms in 10ms intervals. 2. Some audio receivers can also adjust audio delays. The optimal audio delay depends on the display device so it can only be obtained by experimenting. For extreme cases, Stopping and Resuming DVD playback will stop Audio-sync errors."