Troubleshooting Screen Issues
If you experience any of the problems below while using the product, please check the
following: There may be no problem with the product.
First of all, perform a Support Additional Settings Picture Test for
check any abnormalities in the TV.
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 coaxial cable or the cable connected to the external device is properly
connected to the TV.
Go to 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 programmes.
Start the Programmes Programme Tuning (Programme Tuning &
Settings) Auto Tuning.
If you are using a set-top box, consult its supplier.
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 programme has a different image quality.
Depending on the type of videos provided by the broadcasters, programmes may have
different image qualities.
If you are using a set-top box, consult its supplier.
Run Picture Test first. If it is normal, there may be a problem with the broadcast signal.
There is a difference in image quality from those seen at the store.
