LG 32LH500B Service Manual page 25

Standard Repair Process
Error
LED TV
symptom
A6
A5
Power On
Check
(LED Red off)
Power LED
Stand -By : Red
N
Check Power cord
was inserted properly
Normal
End
Power error
Y
N
A6
Y
Check +12V_NORMAL
from power
board and 5V_standby
from main board
No power
DC Power on
by pressing Power Key
On Remote control
Y
Normal
Voltage
N
Replace main board
Established
2016.03.07
date
Revised date
A7
check power on
N
Normal
"high",normal it is
Operati
about 3.3V
on
Y
A2
Check main 5V, 3.3V+ , 1.2V_V_CORE, DDR_1.5V
END
Replace main chip
or main board
Y
Repair power circuit or
replace main board
6/12
Replace
Y
OK Power
B/D
Normal
Voltage
N