B. Power error
Off when on, off while viewing, power auto on/off
Error?
N
Y
Fix A/C cord & Outlet
and check each 2
phase out
Check A/C cord
Check for all 2- phase
power out
Check outlet
Replace Main B/D
CPU
Abnormal
Replace Power B/D
N
Y
Normal?
End
Established
date
Revised date
Error
symptom
Standard Repair Process
7
Abnormal
1
Copyright © 2020 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Summary of Contents for 55UN6900PUB
Page 68: ......