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VIZIO M420VT User Manual
General TV Problems Solution
cannot hear sound.
• Press MUTE on the remote control to make sure that MUTE is not ON.
• Check your audio settings. The audio may be set to SAP, or the speakers are
set to off.
• Check the audio connections of external devices that may be connected to your
HDTV.
The TV has pixels (dots) that
are always dark or colored.
• Your HDTV is manufactured using an extremely high level of precision
technology, however, sometimes some pixels of your HDTV may not display.
Pixel defects within industry specifications are inherent to this type of product
and do not constitute a defective product.
You see “noise” or “trash” on
the screen.
• When your HDTV’s digital capabilities exceed a digital broadcast signal, the
signal is up-converted (increased) to match your TV’s display capabilities. Up-
converting can cause noise or trash.
• If you are using an antenna, the signal strength of the channel may be low.
Make sure your antenna is connected securely to the TV and move the antenna
around the room or close to a window (in the case of indoor antenna use).
You switch to a different input
and the screen size changes.
• The TV remembers the viewing mode from the last time you used a particular
input (AV, Component, HDMI and TV).
Tips for High-Definition Users.
• Your HDTV is an ideal platform for viewing High Definition Content.
• Best image quality will be achieved by HDMI. The next best is Component,
followed by Composite.
• Due to variances in broadcast practices, it is possible some image distortions
can occur.
Tips for Letterbox Content
Users.
• Some Letterboxed (or “Widescreen”) versions of DVD movies are formatted for
standard 4:3 Televisions. Your HDTV has the ability to expand this content so
the entire screen is filled at the expense of image accuracy.
Media Viewer
Problems
Solution
USB device is not recognized.
• Make sure the device is correctly inserted.
• Make sure the device is FAT32
• Make sure it contains the supported files.
• Make sure files are .jpg or .jpeg, MP3 and video format.
Image is interrupted or
distorted.
• Make sure the device is correctly inserted.
• Make sure that the file complies with the supported format, bit rate and/or
profile. Also check the file for damage.
• Some files that comply with the supported format may not play back or display
properly.
Slideshow doesn’t start.
• Make sure the viewer isn’t in pause.
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