Samsung EB40D User Manual page 128

Other issue
There is no sound from the speakers in HDMI mode when a
DVI-HDMI cable is connected.
HDMI Black Level is not functioning properly on an HDMI
device with YCbCr output.
There is no sound in HDMI mode.
DVI cables do not transmit sound data.
Make sure to connect the audio cable to the correct input jack to enable audio.
This function is available only when a source device, such as a DVD player and STB, is connected to the
product via an HDMI (RGB signal) cable.
Displayed picture colours may not look normal. Video or sound may not be available. This can occur if
a source device that only supports an older version of the HDMI standard is connected to the product.
If these issues occur, connect an audio cable along with the HDMI cable.
Some PC graphics cards may not automatically recognize HDMI signals that do not include sound. In
this case, manually select a sound input.
Sound input
PC Auto
Screen mode
PC settings
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