Read LG 52LG70-UA (CHASSIS:LA86A) Service Manual online
- 19 -
C
2008
Around N
o
Signal Pattern or black are
a, Lig
ht leakage problem
Check Loc
al Dimming Status in the picture menu
YES
L
ED Backlight Module(Halo effect)
YES
Video
T
h
is problem is side effect of local dimm
ing
Light leakage means that light can not be obstructed fully
even if the LC sw
itch is turn off.
T
hat
is,the pixel looks
not full black even if the pixel
value is zero.Othe
vry
dark gray
levels
also do not appear dark enough because of l
ight leak
age.
Recheck After Local Dimming Off
YES
Ex) Halo Effect
(Light leakage)
No Signal
TROUBLESHOOTING
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