LG 42PG6000 Service Manual page 18

(5) In the case of becomes unusual display from Component, RGB mode
Is R,G,B input and H,V Sync of the JK701, 703 normal?
1. Check the RGB signal/H(V)SYNC in the RGB Cable
Yes
Same as Block A
(6) In the case of becomes unusual display from HDMI mode
Is the HDMI(IC201)
normal?
Yes
Same as Block A
(7) In the case of becomes unusual display from SCART mode
Is Video input of A/V jack normal?
Yes
Same as Block A
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Only for training and service purposes
No
Is the TMDS waveform between the
IC and HDMI jacks normal?
No
Check the input source.
No
Check the input source of Equipment
No
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Replace the IC201.
LGE Internal Use Only