LG 55LH95QD Service Manual page 63

Trouble shooting
WIRELESS MODEL
OSD
a b
Analog
INPUT MAIN IC
Digital
AV
LGE3159
Component
HDMI
RGB
Defect block Symptoms
a Bad (noise) image / No image
- osd is good
Bad sound / No sound
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.
C Bad image / Bad or No sound
Wireless connecting osd is displayed continually
- No image
＊Focused on Wireless connection
c
LVDS HDMI
SIGNAL
CONVERTER
DTC30LM36 +
SIL9134
MEDIA-BOX
Service
only
HDMI JACK
d e
Wireless
TX MODULE RX MODULE
SIL9125 + SB9111 +
SB9120 + SB9121 +
SB9110 SIL9134
Wired
HDMI CABLE
Wireless connection
No effect directly
No effect directly
No effect directly
No connection
No effect directly
No connection
WIRELESS LH95
OSD
f
HDMI LVDS
MAIN IC
LGE3369 +
LGE7329
TV SET
HDMI5
HDMI JACK
Check
▶ Check the EDID of HDMI & RGB
▶ Check cable & contact error
▶ Check main ic basic power & power
sequence
▶ Control line check (I2C & etc)
▶ Check input/output video & audio
signal
▶ Check power & control line
▶ Check input/output signal
▶ Check inner HDMI cable connection
status
(There can be cable's defect.)
g
LCD
MODULE
LGD V4