ViewSonic LDP216-121, User Manual, Page: 128 / 149

128
Video Not Working Properly
Problem or Issue Possible Solutions
No picture/No sound
1. Check the Power status.
2. Check the signal cable.
3. Use the remote control to ensure the input source
setting is the same as the connected device.
Picture is unclear or
cuts in and out
1. Check the signal cable.
2. Check if other electronics or different signal types
are interrupting the signal.
3. An optional active video cable or optional video
extender is required for a long distance source.
Poor picture
1.
Adjust chroma and/or brightness settings in the
menu.
2. Check the signal cable.
3.
Use the display’s native resolution for the source.
Audio Not Working Properly
Problem or Issue Possible Solutions
No sound
1.
Press the Mute/Unmute button.
2. Adjust the volume.
3.
Check the audio cable connection (if used).
4. If using a computer digital video with embedded
audio, ensure the computer speakers are set to
external speakers.
One speaker only
1.
Adjust the sound balance in the menu.
2. Check the left and right sound control panel settings
of the computer or media player source.
3.
Check the audio cable connection (if used).
4. Ensure the content has two audio channels and not
mono.