LG 37LV370S Service Manual page 46

Standard Repair Process
Error
LCD TV
symptom
☞158
Check ST-BY
Red lamp
(Lamp)
display
N
Check AC cord
connection and
voltage
Normal
voltage?
N
Check and fix outlet and power cord connected condition
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
B. Power error
No power
Y
☞159
Y
Check ST-BY 3.5V
Established
date
Revised date
☞160
Check Power
Normal
On Key
operation?
operation
Measure voltage of each output of Power B/D
Normal
Y
voltage?
Normal
Y
voltage?
Replace Power B/D
N
Replace Power
B/D
※ For Pacific 2, operation display LED can be off even with ST-BY output of 3.5V
→ In this case, replace the Digital B/D instead of the Power Board
2008. 2 . 1
☞160
N
Check Power
OK?
On '"H"
Y
Replace Main B/D
☞161
Y
Replace Main B/D
N
Electronics 6-3
6/13
Y
Replace
Power B/D
LGE Internal Use Onl