Audio Lipsync Issues on Samsung Series 7

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ZollyMonsta

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#31107 4-Mar-2009 21:19

We splashed out and got a 52 inch Samsung Series 7.

Loving the set, but we have one peeve with it.

We've got the TV speakers turned off and are using the 'audio out' analogue jacks to output audio to the stereo. There is a significant difference between the video and the audio using this method.

It seems the analogue audio is ahead of the video on screen. Using the in-built TV speakers there is no issue.
By listening to the audio through the stereo with the TV speakers enabled, you can hear the delay between the two.

Is there any way round this? We do not have a stereo system which will delay the audio. I can't understand why the analogue audio jacks don't have their audio delayed to match the audio output from the speakers as a lot of people will be using this method. The sound from the inbuilt speakers isn't that great.

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Snowflake

#199290 4-Mar-2009 21:43

i had a similar problem with my older samsung screen (ps42s4s). it was ok when watching dvd's when sent to the TV using a decent signal (i.e. when the tv didnt have to do any scaling) but was terrible when feeding lower quality signals in - e.g. non hd sky and especially analog tv.

when i spoke to radiola about it they said it was a known problem and that they were doing wiring jobs to send attenuated speaker output to the audio outs instead.

"apparently" the problem had been fixed on the newer models...

what i did find when playing around with it all was a code to access the service menu on the screen from which i was able to play with an audio delay setting. using the setting i was able to reduce the delay but not get rid of it but it then screwed up dvds....

the way i eventually got around it was to run everything through the HTPC. not the HTPC sends SPDIF directly to the home theatre amp and native resolution video signal via DVI to the screen. Because the screen is now doing no processing on either audo or video I no longer have problems :D

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ZollyMonsta

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#199291 4-Mar-2009 21:52

This is a newer one, from what I understand it is one from the latest manufactured batch.
The current firmware appears to be from very late last year. The most obvious fix to me would be for the firmware to be updated to allow adding audio delay from within the menu system. Re-wiring internally seems an odd measure, considering down the track you may have a new amp and need more flexibility with the delay.

Obviously the analogue audio output is taking a different path, than the TV speakers.

Have tested with S-Video, HDMI and Freeview Terrestrial (built in decoder) and same delay experienced on all outputs.

I sent an email via their website, may call them tommorow also. Other than this problem we're finding the TV fantastic. It does a real good job of upscaling SD channels also.

Regs

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Snowflake

#199294 4-Mar-2009 21:58

i dug up the key combo for accessing the service menu - maybe it will work on yours too:

using remote control when screen powered off, press in quick succession:

power+info+menu+mute+power

there were seperate options for SD Delay and HD Delay for each input source

edit: there are also lots of menus and settings for tweaking virtually everything, including overscan and DNIE

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ZollyMonsta

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#199295 4-Mar-2009 22:07

Just tried that.. Nothing happened and no additional options available under the sound menu. Perhaps its not implemented in this model?

Regs

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Snowflake

#199296 4-Mar-2009 22:07

ZollyMonsta:
Obviously the analogue audio output is taking a different path, than the TV speakers.

on my screen this was completely pass-through - i.e. it output exactly what it was sent (by aerial, input, etc) without passing it through the processor.

Have tested with S-Video, HDMI and Freeview Terrestrial (built in decoder) and same delay experienced on all outputs.

perhaps the service menu might be of use to you then. try this site if the code i gave you does not work as it has a few more combos listed: http://www.riddledtv.com/forums/samsung-tv-service-menu-codes-plasma-lcd-crt-rptv-t291.html

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Regs

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Snowflake

#199297 4-Mar-2009 22:11

ZollyMonsta: Just tried that.. Nothing happened and no additional options available under the sound menu. Perhaps its not implemented in this model?

i think i had one too many power button presses in there. from standby press INFO, MENU, MUTE, POWER then see if the menu appears.

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ZollyMonsta

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#199298 4-Mar-2009 22:11

Hmm big standard disclaimer on that site :) Should I be worried about trying these codes?

Regs

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Snowflake

#199299 4-Mar-2009 22:14

ZollyMonsta: Hmm big standard disclaimer on that site :) Should I be worried about trying these codes?

grab your digital camera and photograph the default settings while you change them. there is always a factory reset option
i can't see how changing the audio delay will wreck your TV - perhaps tweaking some of the picture settings wron could cause issues, but i'm not convinced :)

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ZollyMonsta

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#199311 4-Mar-2009 23:30

None of those codes work, sadly. Some I can't use as I don't have a {P.STD} or {DISPLAY} button on my remote.

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Snowflake

#199316 5-Mar-2009 00:14

what exact model do you have?

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ZollyMonsta

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#199344 5-Mar-2009 08:17

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ZollyMonsta

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#199451 5-Mar-2009 18:15

My email to Samsung today:

Hello,

We purchased a LA52A750D (Samsung Series 7 52 inch) TV last Week.

We have noticed issues with sound delay (lipsync issues) on the TV set when using the left/right audio outputs to our stereo.

This is apparent on all sources, including the built in Freeview tuner.

However, using the in-built TV speakers the audio is fine.

I have spoken to Samsung's 0800 number, but they cannot offer any solutions other than to use a stereo with an adjustable sound delay. This is not acceptable. An example of the delay can be heard by monitoring on the stereo speakers and the TV speakers at the same time, this can be heard in the form of an echo due to the delay between the two speakers.

The TV should have a menu option to add delay to the analogue audio outputs on the back of the TV set.

We spent $6000 on this Television set. There was no warning of these audio issues to be found anywhere on Samsung's website.

I look forward to your reponse.

Samsungs response via their website:

Thank you for your enquiry, As technology gets better older systems
become less able to keep up with the newer technology, New home theatre
systems have the option to alter the time delay on sound inputedto it,
this is how the new technology works, there is nothing faulty with your
tv it needs a newer home theatre system to get the most out ofthe
technology you have purchased.

Yes, fair enough but the website doesn't state the audio delay issue nor does the manual. Forcing people to upgrade their home theatre when all it would take is a simple addition to their firmware to allow delay be added via the TV.. This just plain sucks.

Even worse, Samsung give no opportunity to reply to their response. The link simply takes you back to their feedback page on their website, where you have to re-enter all your information again.

I'm waiting to hear back from Next Electronics about any 'hidden' service menus that could be of assistance, short of that looks like we'll have to go spend more $$s on a home theatre system we really didn't want to buy.

richms

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#199485 5-Mar-2009 21:02

Could you not just use the headphone socket on the tv?

I would just return a tv if I had that issue with it. Mum has an old small samsung and it has no issues between the audio and video sync, but there is no delay on the tv either. That would make a tv useless for gaming anyway.

Richard rich.ms

ZollyMonsta

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#199496 5-Mar-2009 21:17

Well I could, but we love the TV... the sound (oh, and the poor DNLA support.. ho hum) are the only downsides.
There seems to be a lot of chat on the net about the DNLA side of things. I'm still hopeful some firmware upgrades will be released.

I've noticed that via DNLA the tv won't show a video file full screen, even if it's got the widescreen flag turned on in the file. It will however if you transcode the file to 1920x1080.

We're probably going to consider upgrading the home theatre amp.. if we can find one at a decent price. Probably one with optical in is the best way to go I'm guessing.

Regs

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Snowflake

#199522 5-Mar-2009 22:19

try calling the guys at radiola. they were very helpful when i spoke to them in the past. they were the ones who sent me a pre wired kit to redirect the speakers to the RCA ports (i said i would install myself)

have you seen the avsforums thread on the s6 lcd?
http://www.avsforum.com/avs-vb/showthread.php?t=1007540

the service menu sequence there is as follows:
1. Turn off the TV
2. Press 'Mute' '1' '8' '2' 'Power'
3. The TV will start and you will be in the SM (give it a few extra seconds).

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