Toshiba 50L3400U User's Guide for 40L3400U and 50L3400U Series TV's - Page 121

Picture problems

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121 Troubleshooting Picture problems Onscreen Demo Pop-up If your TV is displaying a Demo pop-up screen, reset the Store / Home mode setting to Home. For more information see "Installation setup selection" on page 48. TV will not turn on. Ensure the power cord is plugged in properly, and then press the POWER button. Ensure the TV is plugged into a working AC power outlet by plugging another device into the AC power outlet to verify the AC power outlet is working. Replace the batteries in the remote control, see "Installing batteries" on page 39. Try the control panel buttons on the TV. Picture problems General picture problems. Check the antenna/cable connections, see "Connecting Your TV" on page 24. Press the INPUT button on the remote control or on the TV and select a valid video input source, see "Selecting the video input source" on page 54. If no device is connected to an input on the TV, no picture appears when you select that particular input source. For device connection details, see "Connecting Your TV" on page 24. Antenna reception may be poor. Use a highly directional outdoor antenna (if applicable). The station may be having broadcast difficulties. Try another channel. Adjust the picture quality, see "Using the advanced picture settings" on page 100. Picture size changes by itself or when the TV is turned OFF and back ON. Turn the Auto Aspect feature of the TV to OFF. see "Using the advanced picture settings" on page 100. Cannot select external video sources. If you cannot view signals from external devices connected to VIDEO, ColorStreamTM HD, HDMI 1, HDMI 2, or HDMI 3, ensure that the Input Lock is set to Off, see "Using the input lock feature" on page 80.

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121
Troubleshooting
Picture problems
Onscreen Demo Pop-up
If your TV is displaying a Demo pop-up screen, reset the Store /
Home mode setting to Home. For more information see
“Installation setup selection” on page 48.
TV will not turn on.
Ensure the power cord is plugged in properly, and then press the
POWER
button. Ensure the TV is plugged into a working AC
power outlet by plugging another device into the AC power outlet to
verify the AC power outlet is working.
Replace the batteries in the remote control, see
“Installing batteries”
on page 39.
Try the control panel buttons on the TV.
Picture problems
General picture problems.
Check the antenna/cable connections, see
“Connecting Your TV”
on page 24.
Press the
INPUT
button on the remote control or on the TV and
select a valid video input source, see
“Selecting the video input
source” on page 54
. If no device is connected to an input on the TV, no
picture appears when you select that particular input source. For
device connection details, see
“Connecting Your TV” on page 24.
Antenna reception may be poor. Use a highly directional outdoor
antenna (if applicable).
The station may be having broadcast difficulties. Try another
channel.
Adjust the picture quality, see
“Using the advanced picture settings”
on page 100.
Picture size changes by itself or when the TV is turned OFF and
back ON.
Turn the Auto Aspect feature of the TV to OFF. see
“Using the
advanced picture settings” on page 100.
Cannot select external video sources.
If you cannot view signals from external devices connected to
VIDEO, ColorStream
TM
HD, HDMI 1, HDMI 2, or HDMI 3, ensure
that the Input Lock is set to Off, see
“Using the input lock feature”
on page 80.