LG 32LC4R - TROUBLESHOOTING INPUT ISSUES; AV and S-Video Display Issues

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4. In the case of an unusual display in rear AV mode.
Is video input of
the A/V jack normal?
(Check R172)
Yes
Sam as Block A.
Check the input source.
No
5. In the case of an unusual display in Side AV mode.
Is the
video input of
the A/V jack normal?
(Check CN703
Pin9)
Yes
Sam as Block A.
Check the input source.
No
6. In the case of an unusual display in Side S-Video mode.
Is the
video input of
the A/V jack normal (Check
CN703 Pin1,
Pin3)?
Yes
Sam as Block A.
Check the input source.
No