Troubleshooting

Check the following guide for the possible cause of a problem before contacting service.

Symptom

Solution(s)

 

 

HDTV Receiver does

Plug the power cord into a wall power outlet securely.

not turn on.

 

 

 

Fragmented picture and

Check your antenna input, location, and signal strength.

unclear sound.

 

 

 

No picture.

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.

 

 

Normal picture but no

Check volume levels.

sound.

Make sure the TV is not muted.

 

Check that the HDTV receiver is connected properly.

 

 

Picture is distorted.

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.

 

 

Available channels are

You can find all the available channels is by running the “EZ Scan” or “EZ Add” in

missing.

the SETUP menu.

You forgot your pass-

Enter the master password “7777”.

word.

 

The Remote Control

Use Mode button to select STB operational mode.

does not work properly.

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.

 

 

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LG Electronics LST-4200A owner manual Troubleshooting, Symptom Solutions