LG 84WT70PS-B.AWH Owner's Manual page 53

The screen image looks abnormal.
Problem
Is the screen position wrong?
Do thin lines appear on the
background screen?
Horizontal noise appears or the
characters look blurred.
The screen is displayed
abnormally.
After-image appears on the product.
Problem
After-image appears when the
product is turned off.
PRECAUTIONS TO TAKE TO PREVENT IMAGE RETENTION
If a static image is displayed for an extended period of time, the screen may be damaged and the
y
image retention can last for a long time or could be permanent. Damage resulting from long-term
static images is not covered by the product warranty.
Do not display a static image on the screen for more than two hour. Displaying images in a 4:3 aspect
y
ratio for an extended period of time may cause image retention around the border of the screen.
Most third-party products have the same issue and this will not be accepted as a cause for refund or
exchange.
y D-Sub analog signal - Press the "AUTO" button in the remote control
to automatically select the optimal screen status that fits into the
current mode. If adjustment is not satisfactory, select [PICTURE] -
[Screen] - [Position] in OSD menu.
y See if the video card resolution and frequency are supported by the
product. If the frequency is out of range, set to the recommended
resolution in the Control Panel "Display" Setting menu.
y D-Sub analog signal - Press the "AUTO" button in the remote control
to automatically select an optimal screen status that fits into the
current mode. If adjustment is not satisfactory, select [PICTURE] -
[Screen] - [Size] in OSD menu.
y D-Sub analog signal - Press the "AUTO" button in the remote control
to automatically select an optimal screen status that fits into the
current mode. If adjustment is not satisfactory, select [PICTURE] -
[Screen] - [Phase] in OSD menu.
y The proper input signal is not connected to the signal port. Connect
the signal cable that matches with the source input signal.
y If you use a fixed image for a long time, the pixels may be damaged
quickly. Use the screen-saver function.
TROUBLESHOOTING
Resolution
Resolution
53