Chapter 9: Troubleshooting; General Troubleshooting - Toshiba 46VX700U Owner's Manual

General troubleshooting

Before calling a service technician, please check this
chapter for a possible cause of the problem and some
solutions you can try.
Black box onscreen
• The closed caption feature is set to one of the Text
modes (T1, T2, T3, or T4). Set the closed caption feature
to Off (- p. 34).
TV stops responding to controls
• If the TV stops responding to the remote control or TV
control panel and you cannot turn off the TV, press and
hold the POWER button on the TV control panel for 5 or
more seconds to reset the TV.
Other problems
• If your TV's problem is not addressed in this
Troubleshooting section or the recommended solution
has not worked, use the Reset Factory Defaults
procedure (- p. 44).
TV will not turn on
• Ensure the power cord is plugged in. Press p.
• Replace the remote control's batteries.
• Try the control panel buttons.
Picture problems
General picture problems
• Check the antenna/cable connections (- Chapter 2).
• Press + on the remote control or the TV and select a
valid video input source (- p. 33). If no device is
connected to a particular input on the TV, no picture
appears when you select that particular input source. For
device connection details, see Chapter 2.
• Antenna reception may be poor. Use a highly directional
outdoor antenna (if applicable).
• The station may have broadcast difficulties. Try another
channel.
• Adjust the picture qualities (- p. 48).
Video Input Selection problems
• If the Input Selection window does not appear when you
press + on the remote control or the TV control panel,
press + a second time. The TV displays the next video
input source and the Input Selection screen.
Cannot view external signals or channel 3 or 4
• If you cannot view signals from external devices
connected to VIDEO 1, VIDEO 2, ColorStream HD1,
ColorStream HD2, HDMI 1, HDMI 2, HDMI 3, HDMI 4,
PC or from channels 3 or 4, ensure the Input Lock is set
to Off (- p. 37).
Poor color or no color
• The station may have broadcast difficulties. Try another
channel.
• Check the Input mode when you use Shared Inputs (-
p. 30).
• Adjust the Tint and/or Color (- p. 48).
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Chapter 9: Troubleshooting

Poor composite picture
• If the TV is connected to an external A/V device (e.g. DVD
player, video game system, set-top box, etc.) try using a
ColorStream or HDMI video connection instead.
Picture and sound are out of sync
• As with all products that contain a digital display, this
may occur in rare instances, when viewing certain
content (e.g. television broadcasts, video games, DVDs).
The cause may include, without limitation, video
processing within the TV, video processing in an
attached gaming system, and video processing or
different compression rates used by broadcasters in
their programming. Try these procedures:
– If the TV is connected to an A/V receiver that has a
programmable audio delay feature, use this feature
to help synchronize the sound to the picture.
– If the problem occurs only on certain TV channels,
inform your local broadcast, cable, or satellite
provider.
Sound problems
• Check the antenna/cable connections (- Chapter 2).
• The station may have broadcast difficulties. Try another
channel.
• The sound may be muted. Press VOLUME.
• If you hear no sound, try setting the MTS feature to
Stereo mode (- p. 53).
• If you are not receiving a second audio program from a
known SAP source, make sure the MTS feature is set to
SAP mode (- p. 53).
• If you hear audio that seems incorrect for the program
you are watching (such as music or a foreign language),
the SAP mode may be on. Set the MTS feature to Stereo
mode (- p. 53).
• If you connect a PC using either the PC IN terminal or an
HDMI terminal, ensure that the Side Shared Audio
setting is properly set (- p. 41).
Remote control problems
• Ensure the remote control is set to the correct device
mode (- p. 85).
• Remove all obstructions between the remote control and
the TV.
• Replace the remote control's batteries (- p. 23).
• Your TV's remote control may not operate certain
features on your external device. Refer to the owner's
manual for your other device to determine its available
features. If your TV remote control does not operate a
specific feature on another device, use the remote
control that came with the device (- p. 88–93).
• If the TV still does not act as expected, use the Reset
Factory Defaults procedure (- p. 44).
Channel tuning problems
• Ensure the remote control is set to the correct device
mode (- p. 85).
• The Auto Tuning feature may have erased the channel
from memory. Add the channel to the channel memory
(- p. 28).
• The Lock feature may have blocked the channel. Unblock
the channel (- p. 37).