LG 42LV3500 Service Manual page 78

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
Edge LED PSU without LED Driver
Lamp PSU without inverter
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
A. Video error_No video/Normal audio
LED driver/lamp inverter B+ 24V measuring method
Established
Revised
Check the DC 24V, 12V, 3.5V and Inverter on
* 26" ~ 47" :
Lamp (Power Board ↔ Inverter)
1 ~ 5
6 ~ 10
11
12
13
14
A2
2011. 2 .07
date
date
`11 Pin map
- PSU
14 Pin
24V
GND
Detect
Inverter On/Off
Int. PWM
Ext. PWM (PDIM)
A2
LGE Internal Use Only