LG OLED55B9PUA

Off when on, off while viewing, power auto on/off
Error?
N
Y
Check Power Off
Mode
Fix Power cord & Outlet
and check each 2 phase out
Check Power cord
Check for all 2- phase
power out
Check outlet
Replace Main B/D
CPU
Abnormal
(If Power Off mode is
not displayed)
Check Power B/D
output voltage
Y
N
Replace Main B/D
Normal
voltage?
Replace Power B/D
Replace Power B/D
N
Y
Normal?
End
※ Caution
Check and fix exterior
of Power B/D Part
☞A12
☞A10/A11
Established
date
Revised date
7/17
Error
symptom
Standard Repair Process
7
Abnormal
1
B. Power error
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