LG M2250D Service Manual

ⓒ LG Electronics. Inc.2011
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 Main Board
3.5V,12V,3.3V,
1.26V, 1.5V etc.
Normal
voltage
Y
N
Replace T-con
Board or module
Repair Power
Board or parts
Check LED driver Board
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,,,)
1

LG M2250D Specifications

General

3D	No
Aspect ratio	16:9
Display diagonal	21.5 \
Viewing angle, vertical	160 °
Contrast ratio (dynamic)	5000000:1
Display number of colors	16.78 million colors
Viewing angle, horizontal	170 °
Display brightness (typical)	250 cd/m²
Supported graphics resolutions	1920 x 1080 (HD 1080)
Audio input	Yes
USB hub version	2.0
DVI-I ports quantity	0
Annual energy consumption	89 kWh
Power consumption (standby)	0.5 W
Power consumption (typical)	61 W
Product color	Black
Market positioning	-
Panel mounting interface	100 x 100 mm

Weight and Dimensions

Depth (without stand)	59.5 mm
Width (without stand)	509.1 mm
Height (without stand)	403 mm
Weight (without stand)	2900 g