LG 28LJ400B Service Manual page 28
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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
7 Function Trouble HDMI YPbPr CVBS
A4-2 Function error
HDMI,YPbPr,CVBS error
HDMI , YPbPr , CVBS
Check the signal at the jack
N
Check the external source
Check the circuit from jack to
U1(MSD3553)
Y
Check the signal on the
Corresponding of U1
N
Change U1(MSD3553)
6 12 31
Y
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