LG 55LH95QD - Defect block a; Defect block b

INPUT MAIN IC
AV
Component
HDMI
RGB
LGE3159
Analog
Digital
WIRELESS MODEL
SIGNAL
CONVERTER
DTC30LM36 +
SIL9134
LVDS
MEDIA-BOX
TX MODULE
HDMI
SIL9125 +
SB9120 +
SB9110
RX MODULE
SB9111 +
SB9121 +
SIL9134
MAIN IC
LCD
MODULE
LGE3369 +
LGE7329
LGD V4
LVDS
Wireless
TV SET
HDMI
a b c d e f g
Service
only
HDMI JACK
HDMI5
HDMI JACK
Wired
HDMI CABLE
Defect block Symptoms Wireless connection Check
a Bad (noise) image / No image
-osdis good
Bad sound / No sound
No effect directly
b Bad image
- IC’s cold soldering or memory defect accompanied noise on osd
Bad sound / No sound
Wireless connecting osd is displayed continually
- There is no video signal from Rx module to TV main ic, so TV
understand this time like disconnection state and display connecting
osd continually. And then, if TV is not activated rightly within 15min,
it will go to st-by mode.
No effect directly
No effect directly
No connection
▶ Check main ic basic power & power
sequence
▶ Control line check (I2C & etc)
▶ Check input/output video & audio
signal
C Bad image / Bad or No sound
Wireless connecting osd is displayed continually
-No image
No effect directly
No connection
▶ Check power & control line
▶ Check input/output signal
▶ Check inner HDMI cable connection
status
(There can be cable’s defect.)
▶ Check the EDID of HDMI & RGB
▶ Check cable & contact error
Trouble shooting
OSD OSD
＊Focused on Wireless connection
WIRELESS LH95