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32LD420 (CHASSIS:LP91H) - LG TV Service Manual (repair manual). Page 13

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- 13 -
No Raster on PC Signal
Check Input source Cable
and Jack.
Pass
Re-soldering or
Change the defect part. 
Pass
Check the Input/Output
Of IC201.
Fail
Re-soldering or
Change the defect part,
Check RGB EDID Data.
Repeat [A], & [B] Process
Pass
Check the Input/Output
Of JK202.
Fail
Pass
Check the Input/Output
of IC800
Fail
Re-soldering or
Change the defect part.
Pass
No Raster on COMMPONENT Signal
Check Input source 
Cable and Jack.
Pass
Re-soldering or 
Change the defect part.
Pass
Check the Input/Output
Of IC800.
Fail
Re-soldering or 
Change the defect part.
Repeat [A], & [B] Process.
Check the Input/Output
of JK101.
Fail
Pass
No Raster on HDMI Signal
Check Input source 
Cable And Jack.
Pass
Check
the Input/Output of JK301,
JK302, JK303.
Fail
Re-soldering or 
Change the defect part.
Pass
Pass
Check
the Input/OutputOf IC300,
IC301, JK302.
Fail
Re-soldering or 
Change the defect part.
Check HDMI EDID Data.
Re-download HDCP.
Pass
Pass
Check the Input/Output
Of IC800.
Fail
Re-soldering or 
Change the defect part.
Repeat [A], & [B] Process.
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