I recently purchased a Samsung HL-S4265W DLP HDTV and I've noticed that it seems to have a very slight lip sync problem. I've noticed it when watching standard def TV directly from my cable source as well as when watching DVDs on my Xbox 360 via component cables. The problem is a bit more apparent on the 480i cable, but it is very minor on both. In fact, my wife and my brother both think I'm crazy because they say they can't see it. But I seem to notice it and it drives me crazy.

Does anyone know if there are any settings in the service menu that can tweak the TV's internal audio delay? There's a delay even from the TV's speakers, so an external audio delay box or a receiver that allows you to delay the audio won't help.

I recently purchased a Samsung HL-S4265W DLP HDTV and I've noticed that it seems to have a very slight lip sync problem. I've noticed it when watching standard def TV directly from my cable source as well as when watching DVDs on my Xbox 360 via component cables. The problem is a bit more apparent on the 480i cable, but it is very minor on both. In fact, my wife and my brother both think I'm crazy because they say they can't see it. But I seem to notice it and it drives me crazy.

Does anyone know if there are any settings in the service menu that can tweak the TV's internal audio delay? There's a delay even from the TV's speakers, so an external audio delay box or a receiver that allows you to delay the audio won't help.

i may be wrong but I do not believe that Samsung DLP's have any audio delay setting. In fact I don't know of other TV's that do, maybe someone can offer some examples. What you are experiencing sounds like a source issue. maybe you should consider either an external audio delay processor or a receiver with an audio delay setting. I know that on some channels I have a small sync problem but on others the problem is not there (I have Verizon FiOS). I generally tend to ignore it since no one setting on my receiver will be right for all channels. I don't see any delay on DVD or on my xBox 360.

I don't know for a fact that the TV has an audio delay setting, but it does seem to do something with the audio. When I change channels you can hear the audio for a second, then it cuts out for a split second (as though it's adding delay) and then cuts back in.

I also don't think it's a source problem because I can't notice a problem on other SDTV's in my house. Just on the DLP.

OK, so I conducted a somewhat unscientific test last night and I believe I've determined two things:

1) The TV does seem to have some built in audio delay
2) The delay doesn't seem to be compensating enough, leaving the audio marginally ahead of the video

What I did was split my cable and hook up my old 27" Sony CRT side-by-side with the 42" Samsung DLP (HL-S4265W). I then tuned both TVs to the same SD, 480i channel. The Samsung was noticeably behind in terms of video. When camera angles would switch, I could see the jump first on the Sony and then a split-second later on the Samsung. I also tuned both the TVs to our local weather channel, which has a scrolling ticker along the bottom. I took a picture of both TVs and in the photo the Sony's ticker was usually about half a character ahead of the Samsung's.

But when I turned the audio up on both sets, it was clear that the Sony's audio was also ahead of the Samsung's, which tells me the Samsung tries to delay the audio to match the video. Here's where it gets completely subjective though: to my untrained eyes and ears, it SEEMS like the Samsung's video is slightly further behind the Sony's video than its audio is behind the Sony's audio.

I'm now trying to figure out if there are ways I could conduct similar tests with 480p and 720p content. If the audio on the Samsung is only out of sync because de-interlacing the video is slowing it down, I think I can live with that. If Xbox 360 games and DVDs have sync-ed up audio/video, I can live with slightly out of sync SDTV until I get a high-def TV source. However, if the audio is out of sync from all sources, this TV may have to go back.

Is anyone familiar enough with the Samsung service menu to tell me if there's a setting in there for audio delay? I'm not sure I want to mess around in there, but it would help to know if a fix is even possible.

Oh, and an external audio delay box (like a Felston or whatever) or a new receiver isn't really an option. I don't feel like shelling out several hundred dollars more to simply mask a problem with the TV.

I received 2 days ago a HL-T with a very similar problem. While browsing the Samsung web site, under support, there is a service note that gives a phone number to call if you have a lip sync probelm. It indicates a Samsung tech will come out and fix it! I find it again and post it.

I received 2 days ago a HL-T with a very similar problem. While browsing the Samsung web site, under support, there is a service note that gives a phone number to call if you have a lip sync probelm. It indicates a Samsung tech will come out and fix it! I find it again and post it.

Thanks dloose, I think I found what you're referring to (from Samsung's support site). It's interesting that, in the section I bolded, they openly acknowledge this is a DLP-specific problem. This page also confirms built-in audio delay technology (that hopefully can be tweaked to correct my problem!):

"If the sound and video are unsynchronized, it's highly likely you have either a DLP TV or a TV connected to a Home Theater System (HTS) or, sometimes, a stereo system. Solutions for this problem for both are presented below.

Important: An unsynchronized sound problem is rare among other kinds of TVs or TVs not attached to an HTS or stereo. If you do not have a DLP TV or a TV attached to an HTS or stereo, and you are having an unsynchronized sound problem, please call Samsung Customer Care at 1-800-SAMSUNG (1-800-726-7864) any day between 9 a.m. and 9 p.m. for assistance.

Unsynchronized Sound And Video With DLP TVs
If the sound on your DLP TV is out of sync with your picture and the TV is not connected to a home theater system or stereo, a Samsung technician can adjust the sound synch function on the TV so that the sound and picture are in synch.

To arrange a service call to adjust the sound synch function, call Samsung Customer Care at 1-800-SAMSUNG (1-800-726-7864) any day between 9 a.m. and 9 p.m.

Unsynchronized Sound And Video With Home Theater Systems or Stereo
If the sound on your TV - and this can be any kind of TV - is out of synch with your picture and you are using a home theater system (HTS) or stereo, things become more difficult. In many setups, the television signal comes into a set top box. The set top box audio output is connected directly to the HTS or stereo and the set top box video output is connected directly to the TV. Consequently, the audio portion of the signal is sent directly to the HTS or stereo without passing through the TV, and the video portion of the signal is sent directly to the TV without passing through the HTS or stereo. The two signals are separated, processed at different rates, and cannot be synched by adjusting the sound synch function in the TV.

If your system is set up as described above, you still may be able to resolve the sound synch problem. Check your HTS or stereo user's manual to see if your HTS or stereo has a Sound Delay function. If it does, you may be able to adjust the Sound Delay so that the sound and picture are in synch.

If your HTS or stereo does not have a Sound Delay function, you may be able to purchase an audio delay device, such as the Felston DD540, that you can put into your system between the set top box and the HTS or stereo. You should be able to adjust the audio delay device so that the sound and picture are in synch."

OK, so I conducted a somewhat unscientific test last night and I believe I've determined two things:

1) The TV does seem to have some built in audio delay
2) The delay doesn't seem to be compensating enough, leaving the audio marginally ahead of the video

Your older model crt probably doesnt have the video processing features that your DLP has. so although I dont disagree with your conclusion, I would suggest you test versus another similar model from a different manufacturer.

1 thing you failed to mention, is the lag 100% of the time on all channels/sources?
Or is it periodic sync issue that could be related to certain broadcast?

Your older model crt probably doesnt have the video processing features that your DLP has. so although I dont disagree with your conclusion, I would suggest you test versus another similar model from a different manufacturer.

1 thing you failed to mention, is the lag 100% of the time on all channels/sources?
Or is it periodic sync issue that could be related to certain broadcast?

Hey Hipnotiq, thanks for the reply.

Is the lag 100% of the time on all channels/sources? The short answer is I'm not sure. The video AND audio are definitely lagging on all SD cable channels as compared to my CRT. That I know for a fact. But does the video lag behind the audio from all sources on the DLP? I don't know. I'm not even entirely sure it does at all. My wife swears she sees no sync problem. I think I do, but it's reached the point where that's all I look for at times. My PERCEPTION is that the video lags behind the audio on all SD 480i cable channels. When I watch regular DVDs on my Xbox 360 connected via component (480p) it's difficult to tell if there are sync problems. Sometimes it seems like there are, other times it doesn't.

When I play Xbox 360 games via component (720p), there doesn't seem to be any lag at all, but it's difficult to tell in computer generated games. Ditto for Dreamcast games connected via VGA (480p). My brother connected his Wii last weekend via composite (480i) and there was noticeable control lag, but it was impossible to tell if the video lagged the audio.

I think my next test will be to connect my laptop via VGA and play some video files to see if the laptop display and DLP video are in sync.