LG 42LB650T Service Manual

Standard Repair Process Detail Technical Manual
Check power input voltage and ST-BY 3.5V
B. Power error _No power
A18
Established
date
Revised
date
Error
symptom
Content
LCD TV
2013. 11 .30
date
When st-by, only 3.5V is normally on.
Direct LED
Checking method when power is ON
Check the DC 24V, 12V, 3.5V.
24 Pin (Power Board ↔ Main Board) - Common
SMAW200
-
H24S5
Direct
LED
SMAW200
-
H24S5
1
Power on
2
INV_ON
3
3.5V
4
PDIM #1
5
3.5V
6
3.5V
7
GND
8
PDIM #2
9
24V
10
24V
11
GND
12
GND
13 12V 14
12V
15 12V 16
24V
17 GND 18
GND
19
GND
20
GND
19
GND
20
GND
21 GND 22
L/DIM0_VS
23 L/DIM0_MOSI 24 L/DIM0_SCLK
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

LG 42LB650T Specifications

General

Brand	LG
Model	42LB650T
Category	LED TV
Language	English