LG OLED48C1PUB Service Manual page 36

Standard Repair Process
Error
symptom
☞A17
Check Power
LED LED On?
. Stand-By: Red or Turn On
. Operating: Turn Off
Check Power cord
was inserted properly
Normal?
Close
B. Power error
DC Power on
Y
by pressing Power Key
On Remote control
N
N
Y
Check Main ST-BY 3.5V
☞A18
No power
Normal
operation?
Measure voltage of each
output of Power B/D
Y
Normal
voltage?
Normal
Y
voltage?
N
Replace Power B/D
Replace Power B/D
6
Established
date
Revised date
☞A18
N
Check Power
On '"High"
Y
Replace Main B/D
☞A18
Y
Replace Main B/D
N
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Y
Replace
OK?
Power B/D