Read LG 55LH40 / 55LH41 / 55LH400С (CHASSIS:LA92B) Service Manual online
C
2009
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1. Side effect of OPC Function
A change of Brightness or OSD Flicker problem
Check OPC Status in the picture-Advanced
Control menu
YES
YES
This problem is side effect of OPC Function
1)A change of Brightness means Backlight dimming is operating
1)A change of Brightness means Backlight dimming is operating
by dark image because of OPC function
2)A phenomenon of flicker a specially bright area is
Side effect because of OPC
function
Recheck After OPC Off
YES
Ex1) A change of total brightness adding local bright image or caption
<In excluding
a caption
>
< In including
a caption
>
Ex2) A phenomenon of moment flicker a specially
bright area after changing channel or input mode
CATV-3
CATV-3
<Before changing channel>
<After changin g channel>
CATV-2
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