LG 55LM9600 Service Manual page 76

Standard Repair Process
LCD TV
☞A17
Check
Power LED
. Stand-By: Red or Turn Off
. Operating: Turn Off
Check Power cord
was inserted properly
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
B. Power error
Error
symptom
Y
Power LED
On?
N
N
Normal?
Y
※
Close
Check ST-BY 3.5V
☞A18
No power
DC Power on
Normal
by pressing Power Key
operation?
On Remote control
Measure voltage of each output of Power B/D
Y
Normal
voltage?
Normal
Y
voltage?
Replace Power B/D
N
Replace Power
B/D
6
Established
2012.01.16
date
Revised date
☞A19
N
Check Power
OK?
On '"High"
Y
Replace Main B/D
☞A4
Y
Replace Main B/D
N
6/15
Replace
Y
Power
B/D
LGE Internal Use Only