Read LG 19LH20R (CHASSIS:LP91A) Service Manual online
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No Raster on PC Signal
Check Input source Cable
and Jack
Pass
Re-soldering or
Change the defect part
Change the defect part
Pass
Check the Input/Output
Of IC100
Fail
Re-soldering or
Change the defect part,
Check RGB EDID Data
Repeat [A], & [B] Process
Pass
Check the Input/Output
Of J104
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/Output
Of IC300, IC301, JK302
Fail
Re-soldering or
Change the defect part
Check HDMI EDID Data
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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