LG LST-4200A - Manual (Page 46)

46
Troubleshooting
Check the following guide for the possible cause of a problem before contacting service.
Symptom
HDTV Receiver does
not turn on.
Fragmented picture and
unclear sound.
No picture.
Normal picture but no
sound.
Picture is distorted.
Available channels are
missing.
You forgot your pass-
word.
The Remote Control
does not work properly.
Solution(s)
Plug the power cord into a wall power outlet securely.
Check your antenna input, location, and signal strength.
Make sure the correct video display format is selected.
Make sure that the right component type is selected.
If HDTV Receiver is connected to your monitor or TV via the YPbPr port on the back
panel, the output connector setting must be set to the YPbPr position (see page 17).
Otherwise, you will probably see an abnormal picture.
If HDTV Receiver is connected to your monitor or TV via the RGB port on the back
panel, the output connector settting must be set to the RGB position. Otherwise, you
may not be able to see a picture.
Select the EZ Scan or Manual Add functions if you have not already done so.
Check to make sure all the cables are installed correctly and that the proper source
is selected on your TV. For example, Video 1 or 2.
The antenna signal strength may be low. Check the signal strength and adjust the
antenna location and direction.
Due to copyright restrictions, you may not be able to view some high definition pro-
grams in the high definition format.
For more information about connections, please refer to connections on pages 10-14.
Check volume levels.
Make sure the TV is not muted.
Check that the HDTV receiver is connected properly.
Make sure the proper format is selected.
Make sure the proper aspect ratio is selected.
Make sure the video output is connected to the TV.
You can find all the available channels is by running the “EZ Scan” or “EZ Add” in
the SETUP menu.
Enter the master password “7777”.
Use Mode button to select STB operational mode.
Point the Remote Control at the remote sensor on the HDTV Receiver.
Operate the Remote Control within 23 ft (7 m).
Remove any obstacles blocking the signal.
Replace exhausted batteries with new ones.