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Cyber
Subject:
TV Connected To An HD Cable Or Satellite Box (Using Home Theater/Stereo
Speakers)
To
troubleshoot if your TV is connected to an HD cable or satellite box, follow
these steps:
- Determine
if the audio is leading or following the picture. Leading means that you
hear the audio before the lips move. Following means the lips move before
you hear the audio.
- Try
different channels. If the audio is in sync on other channels, then there
could be a broadcasting issue with the original channel or program.
- If the
audio is not in sync on the other channels, test additional HD and SD channels.
- If the audio is out of sync on all other channels, then there could be an
equipment or cabling problem.
If your audio is leading, go to Step 3. If
the audio is following, go to Step 4.
- If
the audio is leading the picture, consult the user manual of your home theater
or stereo to find out how to change the millisecond delay time and correct
the audio sync. If you cannot correct the audio sync using this feature,
go to Step 4.
- Test
the audio from your TV speakers.
- If the audio is in sync when you play it
through the TV speakers, the broadcast signal is good and there is either
a delay from the set top box to the home theater or a delay in processing
the incoming signal.
- If you are not using the digital audio out on your
set top box, try connecting this output to the digital audio input on your
home theater or stereo system. Digital audio transfers the audio signal
faster than analog and may eliminate your audio sync issue.
- The
sync issue could also be caused by faulty wiring or an overly long audio
cable run: For example, if you have an audio connection run from the set
top box to the home theater of 20 feet and a video connection run of only
3 feet. Try moving equipment closer together or using shorter audio cables.
If you can’t decrease the length of the run, try wire with low loss and
quick response designed for long runs.
- If
you are using the audio out ports on the TV and there is still an audio
sync issue after you’ve followed the steps above, your TV needs service.
Please click the “Create Online Service Request” button at the bottom
of this article to begin the service process.
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