LG 49UB850T Service Manual

C. Audio error
Wrecked audio/ discontinuation/noise
Established
date
Revised date
9/16
LCD TV
Error
symptom
Standard Repair Process
2013.01.31
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
Wrecked
audio/
discontinuation/noise
Revised
date
9/16
☞
A21+A18
Wrecked audio/
Discontinuation/
Noise for
all audio
Check and replace
speaker and
connector
Y
Check input
signal
-
RF
Signal
Y
Check audio
B+ Voltage (24V)
☞
A21+A18
Wrecked audio/
Discontinuation/
Noise only
for D-TV
N
Normal
voltage?
-
RF
-External Input
signal
normal?
Replace Main B/D
N
Wrecked audio/
Discontinuation/
Noise only
for Analog
Replace Power B/D
(When RF signal is not
received)
Wrecked audio/
Discontinuation/
Noise only
for External Input
Connect and check
N
Normal
received)
Request repair to external
cable/ANT provider
Replace Main B/D
(In case of
End
Connect
and
check
other external
device
Y
Normal
audio?
Check and fix external device
External Input
signal error)
Check and fix
external device
Check
and
fix
external
device
9
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LG 49UB850T Specifications

General

User memory	3.9 GB
3D glasses quantity	4
Supported file systems	NTFS
Annual energy consumption	155 kWh
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.3 W
Power consumption (typical)	106 W
Product color	Black
VESA mounting	-
Mercury content	0 mg
Screen shape	Flat
Response time	- ms
Display diagonal	49 \
Display brightness	- cd/m²
Display technology	LED
Native aspect ratio	16:9
Display diagonal (metric)	123 cm
Screen format adjustments	4:3, 16:9
Motion interpolation technology	UCI (Ultra Clarity Index) 1000
Picture processing technology	LG Triple XD Engine
Tuner type	Analog & digital
Digital signal format system	DVB-T2
Smart modes	Cinema, Game, Photo, Sports, Standard, Vivid
Lifestyle apps	Skype
Sound modes	Game, MOvie, Movie, News, Sports, Standard
RMS rated power	20 W
PC in (D-Sub)	No
DVI-D ports quantity	0
USB 2.0 ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	1

Weight and Dimensions

Weight (without stand)	- g