Lcd Tv Symptom - LG 55LN5100 Service Manual

Standard Repair Process
Error
LCD TV
symptom
☞A17
Check Power LED
Power LED On?
. Stand-By: Red
N
. Operating: white
Check Power cord
was inserted properly
Normal?
Y
Close
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Only for training and service purposes
B. Power error
No power
DC Power on
Y
by pressing Power Key
On Remote control
N
※
Check ST-BY 3.5V
☞A18
Normal
operation?
Measure voltage of each output of Power B/D
Y
Normal
voltage?
Normal
Y
voltage?
Replace Power B/D
N
Replace Power
B/D
- 46/83 -
Established
2012. 11 .30
date
Revised date
☞A19
N
Check Power
On '"High"
Y
Replace Main B/D
☞A4
Y
Replace Main B/D
N
6/13
Replace
Y
OK? Power
B/D
LGE Internal Use Only