Read LG 50PB4RT-MA (CHASSIS:PP78B) Service Manual online
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5. In the case of becomes unusual display from rear AV mode(main)
6. In the case of becomes unusual display from rear S-Video mode(main)
7. In the case of becomes unusual display from side AV mode(main)
Is normal video input
of the A/V jack?
Is normal video input
of the A/V jack?
Is normal video input
of the A/V jack?
Check the input source
Same as Block A
Same as Block A
Same as Block A
Check the input source
Check the input source
YES
NO
YES
NO
YES
NO
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