Read LG 42LM3400 (CHASSIS:LJ21C) Service Manual online
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No Raster on COMPONENT Signal
Check Input source
Cable And Jack
Pass
Re-soldering or
Change the defect part
Pass
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
Check The Input/Output
Of JK1601, JK1602
Fail
Pass
No Raster on HDMI Signal
Check Input source
Cable And Jack
Pass
Check the Input/Output
Of JK801, JK802, JK803
Fail
Re-soldering or
Change the defect part
Pass
Pass
Check the Input/Output
Of IC103
Fail
Re-soldering or
Change the defect part.
Re-download HDCP
Pass
Pass
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
Pass
Check the Instart Menu
EDID D/L Status
Fail
Re-download EDID Data]
(Adjust Menu EDID D/L)
Pass
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