There's No Sound Or There's A Problem With The Sound - Smart Technologies SMART Board 7000 R Series User Manual

Chapter 5 Troubleshooting
There's no sound or there's a problem with the
sound
Symptom
There's no sound.
OR
There is sound, but the volume is low.
OR
The sound is distorted or muffled.
There is a whine or buzzing sound
coming from the back of the display.
smarttech.com/kb/171539
Troubleshooting steps
If you're using an external audio system, make sure it is turned on.
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Make sure the cables connecting the display to the computer are securely fastened.
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Notes
The display's stereo 3.5 mm in connector works with the VGA input only.
o
o Connecting an audio cable to the display's stereo 3.5 mm out connector
disables the internal speakers.
If you're using the display's S/PDIF out connector to connect a sound bar
o
or receiver for external speakers, see the SMART Board 7000R or 7000R
Pro series interactive displays installation and maintenance guide
(smarttech.com/kb/171538).
If you're using the display's stereo 3.5 mm out connector, adjust the volume on the
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display and the connected computer and make sure neither are muted.
If you're using the display's S/PDIF out connector, adjust the volume on the external
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audio system and make sure the audio system isn't muted.
Adjust the display's audio settings.
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If you're using the integrated speakers, set the volume for the computer and any
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running applications to 80%, and then adjust the display's volume.
OR
If you're using an external audio system, set the volume for the computer, any
running applications and the display to 80%, and then adjust the external audio
system's volume.
If you connect an audio output device to any of the display's USB Type-A
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receptacles, all the display's audio output will be routed through this audio output
device rather than through the display's internal speakers or any external audio
systems connected to the stereo 3.5 mm out connector or the S/PDIF out connector.
Be aware that these sounds are normal. All displays emit some electrical noise.
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Such sounds may be more noticeable with some displays than with others.
However, if you hear noise from the front of the display, further investigation is
required.
Connect all devices to the same power outlet or power bar.
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