LG 32LH500B Service Manual page 37

Standard Repair Process Detail Technical Manual
Error
symptom
LED TV
Check main 5V,3.3V ,V_CORE(1.2V),DDR_1.5V
U701
+5V_Standby
U705
+3.3V_Standby
+1.2V_V_CORE
U705
Q702
+5V_ SW
U702
+3.3V_ NORMAL
U706 DDR_1.5V
Video error_No video/ Audio
Content
Main Board voltage measuring method
Established
2016. 03.07
date
Revised
date
Check all power point
No. Parts Net
1 U701 +5V_Standby
2
U705 +3.3V_Standby
3 U705 +1.2 V_CORE
4
Q702
+5V_ SW
U702 +3.3V_ NORMAL
5
U706 DDR_Power +1.5V
6
+12V
7 CN701
+3.3V_PS-ON
Q703
8
U601
AMP_Power 12V
9
+12V_Panel Power
Q708
10
A2
Test point
C738
C717
FB705
C708
FB703
C743
Pin 1/2
R708
C601
C261