Picture Problems - Toshiba 40L3400U User Manual

122
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
on page 39.
Try the control panel buttons on the TV.
Picture problems
General picture problems.
Check the antenna/cable connections, see
on page 24.
Press the INPUT button on the remote control or on the TV and
select a valid video input source, see
source" on page
picture appears when you select that particular input source. For
device connection details, see
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
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
advanced picture settings" on page 100.
Cannot select external video sources.
If you cannot view signals from external devices connected to
VIDEO, ColorStream
that the Input Lock is set to Off, see
on page 80.
54. If no device is connected to an input on the TV, no
"Connecting Your TV" on page 24.
"Using the advanced picture settings"
HD, HDMI 1, HDMI 2, or HDMI 3, ensure
TM
"Installing batteries"
"Connecting Your TV"
"Selecting the video input
"Using the
"Using the input lock feature"