Samsung forum

General discussion

Video/sound sync problem

by Bill Osler / April 14, 2009 10:48 AM PDT

I have a Samsung LCD TV model LN52A650A. I'm trying to fix the video/sound synchronization. The cable box connects to an Onkyo receiver, and the video feeds from the receiver to the TV. The cable box is Scientific Atlanta IPN330HD. All connections are HDMI. I also have a Samsung BDP2500 BluRay connected to the receiver. So far I have not seen any sync problems on discs played on the BDP2500. I'm trying to figure out whether the problem is in the TV, the receiver, the cable box or the source.

I did test a direct connection between the cable box and the TV and that does not seem to fix the problem so I don't think it's the receiver. That leaves the cable box, TV and the source. My understanding is that the HDMI protocols are supposed to include provisions for maintaining the A/V sync but something is not working. I can sometimes compensate by setting the audio delay in the receiver but that doesn't help if the audio is running behind the video as it sometimes does.

Is there any good way to sort out which is the culprit? Or any adjustment in the TV to help compensate? Suggestions?

Thanks.

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A source
by CHUCKMALLEY / April 15, 2009 1:36 AM PDT

I don't think the cable box should be hooked directly to the receiver.However,go to www.wirewize.com the site is free,you add your components,and it tells you and SHOWS you how to hook up correctly. Some things may seem redundant (why are they telling me to do it that way?)but you'll be pleased with the results.

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Maybe someday ... not now
by Bill Osler / April 15, 2009 12:07 PM PDT
In reply to: A source

The Wirewize site is being redesigned. They don't say when they will be back up.

Why are you unenthusiastic about routing the cable box through the receiver? In theory the cable box can send out 5.1 sound, though I don't have it set to do so. If I route the cable signal through the TV all I can get is stereo. If/when I actually get HD content with 5.1 sound from the cable company I won't want to settle for stereo. If I send video to the TV and sound to the receiver then I lose all hope of having the receiver automatically correct the sync problems between the video and audio.

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