LG 50LF6090 Service Manual page 47

Standard Repair Process
Error
symptom
☞A17
Check Power LED
Power LED
. Stand-By: Red or Logo Light ON
N
. Operating : off
Check Power cord
was inserted properly
Normal?
Y
Close
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B. Power error
Y
On?
N
※
Check ST-BY 3.5V
☞A18
No power
DC Power on
by pressing Power Key
On Remote control
Measure voltage of each output of Power B/D
Y
Normal
Y
voltage?
Replace Power B/D
N
Replace Power
B/D
8 / 97
Established
date
Revised date
☞A19
N
Normal Check Power
On '"High"
operation?
Y
☞A4
Y
Normal
Replace Main B/D
voltage?
N
6/13
Replace
Y
OK?
Power
B/D
Replace Main B/D
LGE Internal Use Only