Troubleshooting Screen Issues

If you experience any of the problems below while using the product, please check the following. There may not be a problem with the product.

If you are using a set-top box, turn it off, and then turn it back on.
Make sure that the set-top box is correctly connected to your TV.

It says there is no signal on the screen.: Check whether the antenna or the cable connected to the external device is properly connected to the TV.; Go to Input select to choose the connected input.; Check if your external device, such as set-top box or Blu-ray player, is turned on.

I cannot see some channels.: Launch Settings All Settings icon General Channels Channel Tuning (Channel Tuning & Settings) Auto Tuning.; If you are using a set-top box, consult its supplier.

The screen is cut off.: Go to Settings All Settings icon Picture and change the Aspect Ratio.; When using an external device (set-top box, game console, etc.), check the screen size settings in the Settings menu of the device.

The screen shakes after the momentary appearance of vertical/horizontal lines and net pattern.: Connect wireless telephones, hairdryers, electrical drills, etc. to a different power outlet. The problem may be caused by high-frequency electronic devices such as another TV or strong electro-magnetic sources nearby.

Each channel has a different image quality.: Depending on the type of videos provided by the broadcasters, channels may have different image qualities.; If you are using a set-top box, consult its supplier.

There is a difference in image quality from those seen at the store.: Depending on the type of video provided by the broadcasters, there may be a difference in image quality from those displayed at the store.

A digitally broadcasted program stops or its screen is broken.: This happens when a signal is weak or reception is unstable. Adjust the antenna direction or check the cable connection.; Settings All Settings icon General Channels Channel Tuning (Channel Tuning & Settings) Manual Tuning
If the signal strength is too low in Manual Tuning, contact the broadcasting station or management office to have the signals checked.; If you are using a set-top box, consult its supplier.

When HDMI input is in use, a vertical solid line or color blurring appears on the upper/lower/left/right edges of the screen.: Settings All Settings icon Picture Aspect Ratio Just Scan
Set Just Scan to Off.
Just Scan shows you the original image as it is. If the signal is weak, the top/bottom/left/right sides of the screen may be snowy.

I don’t see anything, or the image keeps flickering when I try to connect the HDMI cable.: Check whether your HDMI^® cable is compliant with the specifications. You may experience flickering or a blank screen if the HDMI^® cable is faulty (bent, broken).; Make sure that the cable is correctly connected to the port. Bad or loose contact may cause display problems on the screen.; If using a UHD set-top box, adjust Settings All Settings icon General Devices HDMI Settings HDMI Deep Color.

The screen looks too dim or dark.: Settings All Settings icon Picture Select Mode
Switch Select Mode to your desired picture mode. (Standard, Vivid, etc.)
This applies to the current input mode only.; Settings All Settings icon General Energy Saving
Switch Energy Saving Step to either Off or Minimum.

The screen brightness keeps changing.: Settings All Settings icon General Energy Saving
Switch Energy Saving Step to either Off or Minimum.

The screen is in black and white or displaying strange colors.: Check the input mode or cable connection.; Go to Input select to choose the connected input.; When you are connecting to the AV IN, check to ensure each cable is matched with the corresponding color connection.; AV IN port is available in certain models only.

ULTRA HD video does not display.: With some HDMI cables, signals may not be received.; Change the settings of the connected device to the supported signal.