LG 28LJ400B Service Manual page 24
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Also See for 28LJ400B:
- Easy setup manual (45 pages) ,
- Owner's manual (43 pages) ,
- Owner's manual (29 pages)
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Standard Repair Process
Error
LED TV
symptom
3 Display Trouble
A2-2 Display Trouble
White screen
white screen
White screen
Check if the voltage of panel power
supply is normal(depend on panel)
N
Check the circuit of QM1
Change U1(MSD3553)
Established
date
Revised date
Y
Check output signal
from U1(MSD3553)
N
Y
Change the panel
or the cable to panel
Copyright ⓒ 2017 LG Electronics Inc. All rights reserved.
Only training and service purposes.
2016. 12.31
3/10
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