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LG 55UB8500 Service Manual

LG 55UB8500
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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
Copyright 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

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LG 55UB8500 Specifications

General IconGeneral
Screen shapeFlat
Response time- ms
Display diagonal55 \
Display brightness- cd/m²
Native aspect ratio16:9
LED backlighting type-
Supported video modes2160p
Display diagonal (metric)138 cm
Screen format adjustments4:3, 16:9, Auto, Zoom
Supported graphics resolutions3840 x 2160
Motion interpolation technologyUCI (Ultra Clarity Index)
3DYes
3D typePassive
3D glasses quantity2
Annual energy consumption177 kWh
Operating system installedWeb OS
Sound modesDynamic, Movie, Music, Sports, Standard
Audio decodersDolby Digital
RMS rated power20 W
HDMI ports quantity4
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Ethernet LAN (RJ-45) ports1
Consumer Electronics Control (CEC)SimpLink
Audio formats supportedAAC, AC3, EAC3, HE-AAC, MP3, PCM
Image formats supportedJPEG XR, MPO
Video formats supportedDIVX HD
Product colorBlack, Silver
Panel mounting interface400 x 400 mm
AC input voltage110 - 240 V
AC input frequency50 - 60 Hz
Power consumption (standby)0.3 W
Sustainability certificatesENERGY STAR
Package depth157.9 mm
Package width1341.8 mm
Package height787.9 mm
Package weight26489 g
Weight and Dimensions IconWeight and Dimensions
Depth (with stand)261.6 mm
Height (with stand)767 mm
Weight (with stand)21182 g
Depth (without stand)38 mm
Width (without stand)1231.9 mm
Height (without stand)726.4 mm
Weight (without stand)20502 g

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