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Normal

audio

Move to No

video/No audio

No video

Normal audio

Check Back Light

On with naked eye

Check Power Board

12v,3.5v etc.

Normal

voltage

Replace T-con Board

or module

And Adjust VCOM

Repair Power Board

or parts

Check Power Board 24v output

Normal

voltage

Replace Inverter

or module

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

Only for training and service purposes

LGE Internal Use Only

Questions and Answers:

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LG 47LM620T Specifications

General

Display diagonal	47 \
LED backlighting type	-
Screen format adjustments	4:3, 14:9, 16:9, Zoom
Motion interpolation technology	MCI (Motion Clarity Index) 400
3D	Yes
3D glasses quantity	4
Product color	Black
Panel mounting interface	400 x 400 mm
Audio system	Infinite Surround
RMS rated power	20 W
Number of speakers	2
DVI port	No
HDMI version	1.4
DVI-D ports quantity	0
USB 2.0 ports quantity	3
Component video (YPbPr/YCbCr) in	1
Consumer Electronics Control (CEC)	Anynet+
Audio formats supported	AAC, AC3, MP3, PCM
Image formats supported	JPG
Video formats supported	DIVX
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.3 W
Power consumption (typical)	63 W

Weight and Dimensions

Depth (with stand)	263 mm
Height (with stand)	722 mm
Weight (with stand)	17800 g
Depth (without stand)	35.5 mm
Width (without stand)	1089 mm
Height (without stand)	655 mm
Weight (without stand)	15600 g