Read LG 42PT81-ZB (CHASSIS:PP11S) Service Manual online
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6. In the case of an unusual display in rear S-Video mode(Main).
Is the video input
of the A/V jack normal?
Yes
Sam as Block A
Check the input source.
No
7. In the case of an unusual display in Side AV mode(Main).
Is the video input
of the A/V jack normal?
Yes
Sam as Block A
Check the input source.
No
8. In the case of an unusual display in Side S-Video mode(main).
Is the video
input of the A/V jack
normal? (Check R339,
R341,L310)
Yes
Sam as Block A
Check the input source.
No
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