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Posts: 12
Registered: ‎09-10-2017
Message 1 of 4 (639 Views)

Lip Sync issues. Not using a sound bar.

I am having severe lip sync issues.  Model KDL-48R510C.  Not using a sound bar. HELP!

Posts: 1,701
Registered: ‎11-04-2016
Message 2 of 4 (593 Views)

Re: Lip Sync issues. Not using a sound bar.

Hi Laura3dogs,


Welcome and thank you for considering the SONY Community!


We are sorry to hear what happened. We can isolate the issue by following the guidelines below.


There are a number of circumstances that can cause the audio and video to be out of sync:

  • If watching a TV program, it could be the broadcast itself or a bad connection between your cable/satellite set-top box (if applicable).
  • If a DVD or Blu-ray Disc® player is connected, a poor connection or the disc itself could be the cause.
  • When connected to a home theater system with a digital optical cable, then there may be an audio delay that requires a manual adjustment of the home theater system. There may even be a setting on the TV itself causing this issue.

NOTE: Because each of the steps below represents a possible solution to this issue, check if the issue is resolved after completing each step.

  1. Make sure that the TV has the latest system software (firmware) installed.


  2. If watching a TV program, try changing the channel to see if the problem occurs on other channels; if it only occurs on one channel, then the issue is with the broadcast.

    NOTE: If the issue occurs on one channel only, contact the broadcast network provider.

  3. Make sure all cables are securely connected to the TV and the source device (set-top box, DVD player, Blu-ray Disc player, home theater system, or game console).
  4. Try playing a different video source to determine if the issue occurs with other connected devices.
  5. If your TV has a Game Mode setting, do one of the following:
    • Set the Game Mode to Off when watching TV or playing a DVD or Blu-ray Disc.
    • Set the Game Mode to On when playing a video game.
  6. If the issue is happening when using TV speakers, perform a power reset on the TV.
  7. If there is a home theater system and a digital optical cable is used in the connection, manually change the Audio/Video Sync or Audio Delay setting on the home theater system (if available).


    • Audio delay adjustments usually range from 0ms to approximately 250ms.
    • For information about the availability of A/V sync or Audio Delay setting, refer to the operating instructions supplied with the product. Go to Manuals, Specifications & Warranty.
    • For a third-party home theater system, check the instruction manual or contact the manufacturer for information on how to adjust the A/V sync setting.

If the issue is still unresolved, service may be required.


Best regards, 



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Posts: 12
Registered: ‎09-10-2017
Message 3 of 4 (578 Views)

Re: Lip Sync issues. Not using a sound bar.

I have tried your solutions.


Lip sync is an issue on ALL channels.


I have the latest update on my t.v.


I have no Gaming on my t.v.


I jsut tried unplugging the t.v.  So far so good.


I'll post whether or not this is a long term solution.


Pretty sad for a $488 television that is 22 months old.

Posts: 12
Registered: ‎09-10-2017
Message 4 of 4 (573 Views)

Re: Lip Sync issues. Not using a sound bar.

So the restart lasted all of 5 minutes.


All channels are messed up.


Now what?????

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