LG 55LM640T User Manual

Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio
Check Back Light
On with naked eye
On
Y
N
Check Power Board
12v,3.5v etc.
Normal
voltage
Y
N
Replace T-con Board
or module
And Adjust VCOM
Repair Power Board
or parts
Check Power Board 24v output
Normal
voltage
Y
Replace Inverter
or module
N
Repair Power
Board or parts
End
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
※Precaution
Established
date
Standard Repair Process
Revised date
1/13
LCD TV
Error
symptom
A. Video error
No video/ Normal audio
☞A4☞A1
☞A2
☞A28
☞A7 & A3
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,)
2010. 12 .14
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only

LG 55LM640T Specifications

General

3D	Yes
Annual energy consumption	104 kWh
Display diagonal	55 \
Native aspect ratio	16:9
Native refresh rate	60 Hz
LED backlighting type	-
Screen format adjustments	4:3, 14:9, 16:9, Zoom
Motion interpolation technology	MCI (Motion Clarity Index) 400
Tuner type	Analog & digital
Analog signal format system	PAL, SECAM
Digital signal format system	DVB-T2, ISDB-C
RMS rated power	20 W
Number of speakers	2
DVI port	No
HDMI ports quantity	4
DVI-D ports quantity	0
USB 2.0 ports quantity	3
Ethernet LAN (RJ-45) ports	1
Lifestyle apps	Skype
Audio formats supported	AC3, MP3
Image formats supported	JPG
Video formats supported	DIVX, MPEG2, MPEG4
Product color	Black
Panel mounting interface	400 x 400, 400 x 600 mm
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.3 W
Power consumption (typical)	71 W

Weight and Dimensions

Depth (with stand)	331 mm
Height (with stand)	795 mm
Depth (without stand)	33.6 mm
Width (without stand)	1232 mm
Height (without stand)	723 mm