LG PF-43A20, Service Manual

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TROUBLESHOOTING
NO PICTURE/
NO COLOR
Is the CVBS signal at
pin 4 of P101A normal?
Is the CVBS signal at
Pin 40 of IC201 normal?
Is the Y signal at Pin 3
of IC1D normal?
Is the Y signal at Pin 37
of IC201 normal?
Are B-Y, R-Y signal at Pins
33, 34 of IC501 normal?
Are B,G,R signal at Pins 12,
13,14 of IC501 normal?
Check CPT Board
Check IF Board
Check/Replace
IC201
Check/Replace
IC1D, Q202
Check/Replace
IC2D.
Check/Replace
IC501
Check/Replace
IC501
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No